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The brain size can differ greatly between animals including among species of the same animal.
We wanted here to list the brain mass of as many animal species as possible in addition to dog breeds.
This reference article will be helpful for someone comparing the brain weights of animals, contrasting the intelligence of creatures or just learning about brain sizes in general.
Here is the data;
Average Brain Weight of Animal Species
| Animal Type | Scientific Name | Common Name(s) | Brain Weight |
|---|---|---|---|
| Fish | Abantennarius coccineus | Scarlet frogfish / Freckled frogfish | 12 mg |
| Mammal | Abeomelomys sevia | Highland brush mouse / Menzies’ mouse | 1.49 g |
| Fish | Ablennes hians | Flat needlefish / Barred longtom | 1.02 g |
| Bird | Abroscopus albogularis | Rufous-faced warbler | 331 mg |
| Fish | Abudefduf abdominalis | Green damselfish / Hawaiian sergeant major | 285 mg |
| Fish | Abudefduf hoefleri | African sergeant | 52 mg |
| Fish | Abudefduf saxatilis | Sergeant major / Píntano | 356 mg |
| Fish | Abudefduf septemfasciatus | Banded sergeant | 304 mg |
| Fish | Abudefduf sexfasciatus | Scissortail sergeant / Striptailed damselfish | 227 mg |
| Fish | Abudefduf sordidus | Blackspot sergeant / Kūpīpī | 400 mg |
| Fish | Abudefduf vaigiensis | Indo-Pacific sergeant | 99 mg |
| Fish | Abudefduf whitleyi | Whitley’s sergeant | 377 mg |
| Bird | Acanthagenys rufogularis | Spiny-cheeked honeyeater | 1.2 g |
| Bird | Acanthis flammea | Redpoll | 587 mg |
| Bird | Acanthisitta chloris | Rifleman | 343 mg |
| Bird | Acanthiza chrysorrhoa | Yellow-rumped thornbill | 448 mg |
| Bird | Acanthiza ewingii | Tasmanian Thornbill | 653 mg |
| Bird | Acanthiza inornata | Western thornbill | 456 mg |
| Bird | Acanthiza lineata | Striated thornbill | 529 mg |
| Bird | Acanthiza nana | Yellow thornbill / Little thornbill | 378 mg |
| Bird | Acanthiza pusilla | Brown thornbill | 468 mg |
| Bird | Acanthiza reguloides | Buff-rumped thornbill | 402 mg |
| Bird | Acanthiza uropygialis | Chestnut-rumped thornbill | 371 mg |
| Reptile | Acanthocercus atricollis | Black-necked agama / Southern tree agama | 205 mg |
| Fish | Acanthocybium solandri | Wahoo / Hoo | 1.86 g |
| Fish | Acanthogobius flavimanus | Yellowfin goby / Mahaze / Japanese river goby | 124 mg |
| Fish | Acanthonus armatus | Bony-eared assfish | 27.4 mg |
| Fish | Acanthopagrus bifasciatus | Twobar seabream | 590 mg |
| Bird | Acanthorhynchus superciliosus | Western spinebill | 818 mg |
| Bird | Acanthorhynchus tenuirostris | Eastern spinebill | 499 mg |
| Reptile | Acanthosaura armata | Armored pricklenape / Peninsular horned tree lizard | 182 mg |
| Reptile | Acanthosaura capra | Mountain horned dragon / Indo-Chinese spiny lizard / Green pricklenape | 226 mg |
| Fish | Acanthostracion polygonius | Honeycomb cowfish | 466 mg |
| Fish | Acanthurus achilles | Achilles tang / Redtail surgeonfish / Redspot surgeonfish | 640 mg |
| Fish | Acanthurus bahianus | Ocean surgeon / Ocean surgeonfish | 447 mg |
| Fish | Acanthurus chirurgus | Doctorfish tang / Doctorfish | 218 mg |
| Fish | Acanthurus coeruleus | Atlantic blue tang / Blue barber / Blue doctor / Blue doctorfish | 490 mg |
| Fish | Acanthurus dussumieri | Dussumier’s surgeonfish / Eye-stripe surgeonfish / Ornate surgeonfish | 815 mg |
| Fish | Acanthurus guttatus | Whitespotted surgeonfish / Spotted surgeonfish / Mustard surgeonfish / Mustard tang | 662 mg |
| Fish | Acanthurus leucopareius | Whitebar surgeonfish / Headband surgeonfish | 519 mg |
| Fish | Acanthurus leucosternon | Blue surgeonfish / Powder blue tang / Powder-blue surgeonfish | 596 mg |
| Fish | Acanthurus lineatus | Lined surgeonfish / Blue banded surgeonfish / Clown surgeonfish / Pyjama tang | 579 mg |
| Fish | Acanthurus mata | Pale surgeonfish / Blue-lined surgeonfish / Mata surgeonfish / Striped surgeonfish | 724 mg |
| Fish | Acanthurus nigricans | Goldrim surgeonfish / Velvet surgeon / Whitecheek surgeonfish / Yellow-banded surgeonfish | 593 mg |
| Fish | Acanthurus nigricauda | Epaulette surgeonfish / Black-barred surgeonfish / Eye-line surgeonfish / Shoulderbar surgeonfish | 400 mg |
| Fish | Acanthurus nigrofuscus | Brown surgeonfish / Blackspot surgeonfish / Brown tang / Dusky surgeon | 261 mg |
| Fish | Acanthurus nigroris | Bluelined surgeonfish | 373 mg |
| Fish | Acanthurus olivaceus | Orange-band surgeonfish / Orange-shoulder surgeonfish / Orangebar tang | 643 mg |
| Fish | Acanthurus pyroferus | Chocolate surgeonfish / Mimic surgeonfish / Orange-gilled surgeonfish / Pacific mimic surgeon | 404 mg |
| Fish | Acanthurus thompsoni | Night surgeonfish / Chocolate surgeonfish / Thompson’s surgeonfish / Thompson’s tang | 392 mg |
| Fish | Acanthurus tractus | Five-band surgeonfish / Ocean surgeon / Ocean surgeonfish | 488 mg |
| Fish | Acanthurus triostegus | Convict tang / Manini / Convict surgeonfish / Convict surgeon | 319 mg |
| Fish | Acanthurus xanthopterus | Yellowfin surgeonfish / Yellowmask surgeonfish / Ringtail surgeonfish / Cuvier’s surgeonfish | 944 mg |
| Bird | Accipiter nisus | Eurasian sparrowhawk / Northern sparrowhawk / Sparrowhawk | 2.87 g |
| Bird | Accipiter striatus | Sharp-shinned hawk / Northern sharp-shinned hawk / Sharpie | 4.57 g |
| Fish | Acentrogobius caninus | Tropical sand goby / Green-shouldered goby | 83.1 mg |
| Fish | Acentrogobius moloanus | Barcheek amoya | 21.4 mg |
| Fish | Acentrogobius nebulosus | Shadow goby | 118 mg |
| Fish | Acentrogobius viridipunctatus | Spotted green goby | 69.1 mg |
| Mammal | Acinonyx jubatus | Cheetah | 89.4 g |
| Mammal | Acomys cahirinus | Cairo spiny mouse / Common spiny mouse / Egyptian spiny mouse / Arabian spiny mouse | 703 mg |
| Mammal | Acomys wilsoni | Wilson’s spiny mouse | 580 mg |
| Reptile | Acontias percivali | Percival’s lance skink / Percival’s legless lizard / Tanzanian legless lizard | 45.5 mg |
| Bird | Acridotheres tristis | Common myna / Indian myna / Common mynah / Indian mynah | 2.57 g |
| Amphibian | Acris crepitans | Northern cricket frog | 4.39 mg |
| Mammal | Acrobates pygmaeus | Feathertail glider / Pygmy gliding possum / Pygmy glider / Pygmy phalanger | 356 mg |
| Bird | Acrocephalus arundinaceus | Great reed warbler | 941 mg |
| Bird | Acrocephalus melanopogon | Moustached warbler | 410 mg |
| Bird | Acrocephalus orientalis | Oriental reed warbler | 906 mg |
| Bird | Acrocephalus palustris | Marsh warbler | 455 mg |
| Bird | Acrocephalus schoenobaenus | Sedge warbler | 459 mg |
| Bird | Acrocephalus scirpaceus | Common reed warbler / Eurasian reed-warbler | 530 mg |
| Bird | Acrocephalus stentoreus | Clamorous reed warbler | 870 mg |
| Insect | Acromyrmex echinatior | – | 0.127 mg |
| Insect | Acromyrmex versicolor | Desert leafcutter ant | 0.11 mg |
| Fish | Acroteriobatus annulatus | Lesser guitarfish / Lesser sandshark | 2.23 g |
| Insect | Acrotrichis grandicollis | – | 0.002 mg |
| Bird | Acryllium vulturinum | Vulturine guinea fowl | 4.71 g |
| Bird | Actitis hypoleucos | Common sandpiper | 824 mg |
| Bird | Actitis macularius | Spotted sandpiper | 704 mg |
| Bird | Actophilornis africanus | African jacana | 1.16 g |
| Mammal | Addax nasomaculatus | Addax / White antelope / Screwhorn antelope | 196 g |
| Bird | Adelomyia melanogenys | Speckled hummingbird | 203 mg |
| Amphibian | Adelotus brevis | Tusked frog | 22.4 mg |
| Fish | Adontosternarchus balaenops | – | 117 mg |
| Bird | Aechmophorus occidentalis | Western grebe | 3.92 g |
| Bird | Aegithalos caudatus | Long-tailed tit / Long-tailed bushtit | 458 mg |
| Bird | Aegithalos concinnus | Black-throated bushtit / Black-throated tit | 382 mg |
| Bird | Aegithina tiphia | Common iora | 692 mg |
| Bird | Aegolius acadicus | Northern saw-whet owl | 3.48 g |
| Bird | Aegolius funereus | Boreal owl / Tengmalm’s owl | 3.98 g |
| Bird | Aegotheles cristatus | Australian owlet-nightjar / Moth owl / Fairy owl / Jarlajirrpi | 1.47 g |
| Bird | Aegypius monachus | Cinereous vulture / Black vulture / Eurasian black vulture / Monk vulture | 28.1 g |
| Reptile | Aeluroscalabotes felinus | Cat gecko | 72.8 mg |
| Fish | Aeoliscus strigatus | Razorfish / Jointed razorfish / Coral shrimpfish | 20 mg |
| Mammal | Aepyceros melampus | Impala / Rooibok | 172 g |
| Mammal | Aepyprymnus rufescens | Rufous rat-kangaroo / Rufous bettong | 12.5 g |
| Bird | Aerodramus spodiopygius | White-rumped swiftlet | 249 mg |
| Bird | Aerodramus terraereginae | Australian swiftlet | 249 mg |
| Mammal | Aeromys tephromelas | Black flying squirrel / Large black flying squirrel | 10.3 g |
| Bird | Aeronautes saxatalis | White-throated swift | 694 mg |
| Bird | Aerospiza tachiro | African goshawk | 4.3 g |
| Mammal | Aethalodelphis obliquidens | Pacific white-sided dolphin / Hookfin porpoise | 1.16 kg |
| Mammal | Aethalodelphis obscurus | Dusky dolphin | 886 g |
| Bird | Aethia cristatella | Crested auklet | 2.56 g |
| Bird | Aethia psittacula | Parakeet auklet | 2.64 g |
| Bird | Aethia pusilla | Least auklet | 1.53 g |
| Bird | Aethomyias nigrorufus | Bicolored scrubwren / Bicolored mouse-warbler | 829 mg |
| Bird | Aethomyias perspicillatus | Buff-faced scrubwren | 570 mg |
| Mammal | Aethomys chrysophilus | Red rock rat / Red veld rat | 1.25 g |
| Mammal | Aethomys hindei | Hinde’s rock rat | 1.42 g |
| Bird | Aethopyga nipalensis | Green-tailed sunbird / Nepal yellow-backed sunbird | 341 mg |
| Fish | Aetobatus narinari | Spotted eagle ray | 20.4 g |
| Amphibian | Afrixalus dorsalis | Brown banana frog / Striped spiny reed frog | 14.9 mg |
| Amphibian | Afrixalus fulvovittatus | Banded banana frog | 16.6 mg |
| Mammal | Afronycteris nanus | Banana serotine / Banana pipistrelle | 100 mg |
| Bird | Afrotis afra | Southern black korhaan / Black bustard | 3.9 g |
| Fish | Afurcagobius tamarensis | Tamar River goby | 28.5 mg |
| Amphibian | Agalychnis annae | Blue-sided leaf frog / Orange-eyed leaf frog | 65 mg |
| Amphibian | Agalychnis callidryas | Red-eyed tree frog / Red-eyed leaf frog | 61.4 mg |
| Reptile | Agama aculeata | Ground agama | 156 mg |
| Reptile | Agama agama | Common agama / Red-headed rock agama | 181 mg |
| Bird | Agapornis canus | Gray-headed lovebird / Madagascar lovebird | 1.19 g |
| Bird | Agapornis fischeri | Fischer’s lovebird | 2.01 g |
| Bird | Agapornis lilianae | Lilian’s lovebird / Nyasa lovebird | 1.59 g |
| Bird | Agapornis nigrigenis | Black-cheeked lovebird | 1.97 g |
| Bird | Agapornis personatus | Yellow-collared lovebird / Masked lovebird / Black-masked lovebird / Eye ring lovebird | 1.97 g |
| Bird | Agapornis pullarius | Red-headed lovebird / Red-faced lovebird | 1.45 g |
| Bird | Agapornis roseicollis | Rosy-faced lovebird / Rosy-collared / Peach-faced lovebird | 1.99 g |
| Bird | Agapornis swindernianus | Black-collared lovebird / Swindern’s lovebird | 1.59 g |
| Bird | Agapornis taranta | Black-winged lovebird / Abyssinian lovebird | 2.13 g |
| Insect | Agapostemon sericeus | Silky striped sweat bee | 0.852 mg |
| Insect | Agapostemon virescens | Bicolored striped sweat bee | 1.28 mg |
| Insect | Agelaia xanthopus | – | 0.292 mg |
| Bird | Agelaioides badius | Grayish baywing / Bay-winged cowbird | 1.53 g |
| Bird | Agelaius phoeniceus | Red-winged blackbird | 1.76 g |
| Reptile | Agkistrodon piscivorus | Cottonmouth / Northern cottonmouth / Water moccasin / Swamp moccasin | 640 mg |
| Bird | Aglaiocercus coelestis | Violet-tailed sylph | 231 mg |
| Bird | Aglaiocercus kingii | Long-tailed sylph | 220 mg |
| Fish | Agonus cataphractus | Hooknose / Pogge / Armed bullhead | 46 mg |
| Reptile | Ahaetulla prasina | Asian vine snake / Boie’s whip snake / Gunther’s whip snake / Oriental whip snake | 165 mg |
| Bird | Ailuroedus crassirostris | Green catbird | 3.2 g |
| Bird | Ailuroedus maculosus | Spotted catbird | 4.56 g |
| Bird | Ailuroedus melanotis | Black-eared catbird | 4.56 g |
| Mammal | Ailuropoda melanoleuca | Giant panda / Panda bear / Panda | 222 g |
| Mammal | Ailurus fulgens | Red panda / Lesser panda | 45.6 g |
| Bird | Aix galericulata | Mandarin duck | 4.3 g |
| Bird | Aix sponsa | Wood duck / Carolina duck | 4.08 g |
| Mammal | Akodon azarae | Azara’s akodont / Azara’s grass mouse | 642 mg |
| Bird | Alauda arvensis | Eurasian skylark | 941 mg |
| Bird | Alca torda | Razorbill / Razor-billed auk / Lesser auk / Auk | 5.21 g |
| Bird | Alcedo atthis | Common kingfisher / Eurasian kingfisher / River kingfisher | 791 mg |
| Mammal | Alcelaphus buselaphus | Hartebeest / Kongoni | 285 g |
| Mammal | Alces alces | Moose | 423 g |
| Bird | Alcippe nipalensis | Nepal fulvetta / Nepal alcippe | 963 mg |
| Bird | Alectoris barbara | Barbary partridge | 2.8 g |
| Bird | Alectoris chukar | Chukar partridge / Chukar / Chukor / Indian chukar | 2.58 g |
| Bird | Alectoris graeca | Common rock partridge | 2.1 g |
| Bird | Alectoris rufa | Red-legged partridge / French partridge | 1.98 g |
| Bird | Alectroenas pulcherrimus | Seychelles blue pigeon / Seychelles blue fruit dove | 1.61 g |
| Bird | Alectura lathami | Australian brushturkey / Australian brush-turkey / Gweela / Bush turkey | 5.88 g |
| Fish | Alepes djedaba | Shrimp scad / Slender yellowtail kingfish | 504 mg |
| Fish | Alepocephalus bairdii | Baird’s smooth-head / Baird’s slickhead | 903 mg |
| Fish | Alepocephalus rostratus | Risso’s smooth-head | 493 mg |
| Bird | Alethe diademata | White-tailed alethe | 1.08 g |
| Reptile | Algyroides nigropunctatus | Blue-throated keeled lizard / Dalmatian algyroides | 59.7 mg |
| Bird | Alisterus scapularis | Australian king parrot | 4.79 g |
| Mammal | Allactaga sibirica | Mongolian five-toed jerboa / Siberian jerboa | 3.5 g |
| Bird | Alle alle | Little auk / Dovekie | 1.98 g |
| Bird | Allenia fusca | Scaly-breasted thrasher | 1.6 g |
| Mammal | Allenopithecus nigroviridis | Allen’s swamp monkey | 59.6 g |
| Reptile | Alligator mississippiensis | American alligator / Common alligator / Gator | 11.2 g |
| Mammal | Allochrocebus lhoesti | L’Hoest’s monkey / Mountain monkey | 81.1 g |
| Dinosaur | Allosaurus fragilis | Allosaurus | 168 g |
| Bird | Alophoixus pallidus | Puff-throated bulbul / Olivaceous bearded-bulbul / Olivaceous bulbul | 1.28 g |
| Fish | Alopias superciliosus | Bigeye thresher | 30.6 g |
| Fish | Alopias vulpinus | Common thresher / Atlantic thresher | 11.3 g |
| Bird | Alopochen aegyptiaca | Egyptian goose | 7.34 g |
| Fish | Alosa alosa | Allis shad | 468 mg |
| Fish | Alosa caspia | Caspian shad | 234 mg |
| Fish | Alosa fallax | Twait shad / Twaite shad | 452 mg |
| Fish | Alosa immaculata | Pontic shad / Black Sea shad / Kerch shad | 494 mg |
| Mammal | Alouatta belzebul | Red-handed howler | 52.8 g |
| Mammal | Alouatta caraya | Black howler / Black-and-gold howler | 51.5 g |
| Mammal | Alouatta guariba | Brown howler / Brown howler monkey | 49.1 g |
| Mammal | Alouatta macconnelli | Guyanan red howler | 61.3 g |
| Mammal | Alouatta palliata | Mantled howler | 53.7 g |
| Mammal | Alouatta pigra | Yucatán black howler / Guatemalan black howler | 56.5 g |
| Mammal | Alouatta sara | Bolivian red howler | 59.1 g |
| Mammal | Alouatta seniculus | Colombian red howler / Venezuelan red howler | 49.1 g |
| Fish | Altolamprologus compressiceps | Lupapa | 91 mg |
| Fish | Altolamprologus fasciatus | – | 64 mg |
| Fish | Aluterus scriptus | Scrawled filefish / Broomtail filefish / Scribbled leatherjacket | 410 mg |
| Amphibian | Alytes cisternasii | Iberian midwife toad / Brown midwife toad | 33.8 mg |
| Amphibian | Alytes obstetricans | Common midwife toad | 41 mg |
| Bird | Amadina fasciata | Cut-throat finch / Bearded finch / Ribbon finch / Cut throat | 590 mg |
| Bird | Amalocichla incerta | Lesser ground robin | 1.14 g |
| Bird | Amalosia rhombifer | Zigzag velvet gecko / Zig-zag gecko | 19.6 mg |
| Bird | Amandava amandava | Red avadavat / Red munia / Strawberry finch | 392 mg |
| Fish | Amatitlania nigrofasciata | Convict cichlid / Zebra cichlid | 91.2 mg |
| Bird | Amaurolimnas concolor | Uniform crake | 1.79 g |
| Bird | Amaurornis moluccana | Pale-vented bush-hen / Rufous-tailed bush-hen | 2.21 g |
| Bird | Amaurornis olivacea | Plain bush-hen / Philippine bush-hen / Bush-hen | 2.21 g |
| Bird | Amaurornis phoenicurus | White-breasted waterhen | 2.42 g |
| Bird | Amazilia tzacatl | Rufous-tailed hummingbird | 220 mg |
| Bird | Amazona aestiva | Blue-fronted amazon / Blue-fronted parrot / Turquoise-fronted amazon / Turquoise-fronted parrot | 7.73 g |
| Bird | Amazona albifrons | White-fronted amazon / White-fronted parrot / Spectacled amazon parrot | 5.47 g |
| Bird | Amazona amazonica | Orange-winged amazon / Orange-winged parrot / Loro guaro | 8.27 g |
| Bird | Amazona auropalliata | Yellow-naped amazon / Yellow-naped parrot | 9.91 g |
| Bird | Amazona autumnalis | Red-lored amazon / Red-lored parrot | 8.42 g |
| Bird | Amazona farinosa | Mealy amazon / Mealy parrot | 11 g |
| Bird | Amazona finschi | Lilac-crowned amazon / Lilac-crowned parrot / Finsch’s parrot / Finsch’s amazon | 7.92 g |
| Bird | Amazona leucocephala | Cuban amazon / Cuban parrot / Rose-throated parrot | 6.12 g |
| Bird | Amazona ochrocephala | Yellow-crowned amazon / Yellow-crowned parrot | 8.73 g |
| Bird | Amazona oratrix | Yellow-headed amazon / Yellow-headed parrot / Double yellow-headed amazon | 8.93 g |
| Bird | Amazona ventralis | Hispaniolan parrot / Hispaniolan amazon | 6.18 g |
| Bird | Amazona versicolor | Saint Lucia amazon / St. Lucia amazon / St. Lucia parrot | 8.87 g |
| Bird | Amazona vinacea | Vinaceous-breasted amazon / Vinaceous-breasted parrot / Vinaceous amazon / Vinaceous parrot | 7.73 g |
| Bird | Amazona viridigenalis | Red-crowned amazon / Red-crowned parrot / Green-cheeked amazon / Mexican red-headed parrot | 7.14 g |
| Bird | Amazona vittata | Puerto Rican amazon / Puerto Rican parrot / Iguaca | 5.94 g |
| Bird | Amazonetta brasiliensis | Brazilian teal / Brazilian duck | 3.52 g |
| Bird | Amblycercus holosericeus | Yellow-billed cacique | 2.29 g |
| Fish | Amblychaeturichthys hexanema | – | 30.9 mg |
| Fish | Amblychaeturichthys sciistius | – | 31.4 mg |
| Fish | Amblycirrhitus bimacula | Twospot hawkfish / Twinspot hawkfish | 61 mg |
| Fish | Amblyeleotris guttata | Spotted prawn-goby | 41.8 mg |
| Fish | Amblyeleotris japonica | – | 37.1 mg |
| Fish | Amblyeleotris steinitzi | Steinitz’ prawn goby / Steinitz’ goby | 14.2 mg |
| Fish | Amblyeleotris sungami | Magnus’ prawn-goby | 27.3 mg |
| Fish | Amblygaster sirm | Spotted sardinella / Northern pilchard / Spotted pilchard / Spotted sardine | 115 mg |
| Fish | Amblyglyphidodon curacao | Staghorn damselfish / Clouded damselfish / Black-snouted sergeant major | 160 mg |
| Fish | Amblyglyphidodon leucogaster | Yellowbelly damselfish | 168 mg |
| Fish | Amblygobius albimaculatus | Butterfly siltgoby / Butterfly goby | 83.2 mg |
| Fish | Amblygobius phalaena | Sleeper Banded goby / White-barred goby | 65.7 mg |
| Fish | Amblygobius semicinctus | Halfbarred goby | 64.8 mg |
| Bird | Amblyornis macgregoriae | MacGregor’s bowerbird | 3.71 g |
| Bird | Amblyornis subalaris | Streaked bowerbird | 3.68 g |
| Fish | Amblyraja hyperborea | Arctic skate | 2.64 g |
| Fish | Amblyraja radiata | Thorny skate | 3.1 g |
| Bird | Amblyramphus holosericeus | Scarlet-headed blackbird | 2.41 g |
| Reptile | Amblyrhynchus cristatus | Marine iguana / Sea iguana / Saltwater iguana / Galápagos marine iguana | 1.43 g |
| Amphibian | Ambystoma maculatum | Spotted salamander / Yellow-spotted salamander | 37.2 mg |
| Amphibian | Ambystoma mexicanum | Axolotl | 50 mg |
| Amphibian | Ambystoma texanum | Small-mouth salamander / Texas salamander / Porphyry salamander / Narrow-mouthed salamander | 15.2 mg |
| Insect | Amegilla quadrifasciata | White-banded digger bee | 3.93 mg |
| Reptile | Ameiva ameiva | Giant ameiva / Green ameiva / South American ground lizard / Amazon racerunner | 211 mg |
| Mammal | Ametrida centurio | Little white-shouldered bat | 290 mg |
| Fish | Amia calva | Ruddy bowfin / Mudfish / Mud pike / Dogfish | 348 mg |
| Fish | Amioides polyacanthus | – | 307 mg |
| Bird | Ammodramus savannarum | Grasshopper sparrow | 672 mg |
| Fish | Ammodytes marinus | Raitt’s sand eel | 85.3 mg |
| Bird | Ammoperdix heyi | Sand partridge | 1.5 g |
| Mammal | Ammospermophilus harrisii | Harris’s antelope squirrel | 2.29 g |
| Mammal | Ammospermophilus insularis | Espíritu Santo antelope squirrel | 2.55 g |
| Mammal | Ammospermophilus interpres | Texas antelope squirrel | 2.5 g |
| Mammal | Ammospermophilus leucurus | White-tailed antelope squirrel | 2.3 g |
| Mammal | Ammospermophilus nelsoni | San Joaquin antelope squirrel / Nelson’s antelope squirrel | 2.47 g |
| Mammal | Ammotragus lervia | Barbary sheep / Aoudad / Mouflon | 209 g |
| Amphibian | Amolops chunganensis | Chungan sucker frog / Chungan torrent frog | 39.6 mg |
| Amphibian | Amolops granulosus | Granular torrent frog | 34.2 mg |
| Amphibian | Amolops lifanensis | Lifan sucker frog / Lifan torrent frog | 49 mg |
| Amphibian | Amolops loloensis | Rufous-spotted torrent frog / Liangshan sucker frog / Lolokou sucker frog | 46.9 mg |
| Amphibian | Amolops mantzorum | Sichuan torrent frog / Kangting sucker frog | 63.5 mg |
| Amphibian | Amolops ricketti | Chinese sucker frog / South China torrent frog | 58.9 mg |
| Amphibian | Amolops sinensis | – | 40.1 mg |
| Amphibian | Amolops torrentis | Torrent sucker frog / Little torrent frog | 60.8 mg |
| Amphibian | Amolops yunkaiensis | – | 49.9 mg |
| Fish | Amoya gracilis | – | 75.1 mg |
| Reptile | Amphibolurus muricatus | Jacky dragon | 146 mg |
| Fish | Amphiprion allardi | Allard’s clownfish / Allard’s anemonefish | 102 mg |
| Fish | Amphiprion bicinctus | Red Sea Clownfish / Red Sea anemonefish / Two-banded anemonefish | 91 mg |
| Fish | Amphiprion chrysopterus | Orange-fin anemonefish | 80.8 mg |
| Fish | Amphiprion melanopus | Cinnamon clownfish / Fire clownfish / Red and black anemonefish / Black-backed anemonefish | 96 mg |
| Bird | Amphispiza bilineata | Black-throated sparrow / Desert sparrow | 702 mg |
| Bird | Amytornis goyderi | Eyrean grasswren | 809 mg |
| Fish | Anacanthobatis marmorata | Spotted legskate | 600 mg |
| Fish | Anampses caeruleopunctatus | Blue-spotted wrasse | 353 mg |
| Fish | Anampses melanurus | White-spotted wrasse | 26.7 mg |
| Fish | Anampses twistii | Yellow-breasted wrasse | 109 mg |
| Spider | Anapisona simoni | – | 0.013 mg |
| Fish | Anarhichas denticulatus | Northern wolffish / Blue sea cat / Jelly cat | 637 mg |
| Fish | Anarhichas lupus | Atlantic wolffish / Seawolf / Atlantic catfish / Ocean catfish | 601 mg |
| Fish | Anarhichas minor | Spotted wolffish / Spotted sea cat / Leopardfish | 967 mg |
| Bird | Anarhynchus alexandrinus | Kentish plover | 987 mg |
| Bird | Anarhynchus bicinctus | Double-banded plover / Banded dotterel / Pohowera | 1.15 g |
| Bird | Anarhynchus collaris | Collared plover | 798 mg |
| Bird | Anarhynchus falklandicus | Two-banded plover | 1.15 g |
| Bird | Anarhynchus leschenaultii | Greater sand plover | 1.34 g |
| Bird | Anarhynchus mongolus | Siberian sand plover | 1.17 g |
| Bird | Anarhynchus pecuarius | Kittlitz’s plover | 850 mg |
| Bird | Anarhynchus ruficapillus | Red-capped plover / Red-capped dotterel | 850 mg |
| Bird | Anarhynchus wilsonia | Wilson’s plover | 1.1 g |
| Bird | Anas acuta | Pintail / Northern pintail | 4.88 g |
| Bird | Anas andium | Andean teal | 3.69 g |
| Bird | Anas aucklandica | Auckland teal / Auckland Islands teal | 4.56 g |
| Bird | Anas bahamensis | White-cheeked pintail / Bahama pintail / Bahama duck | 3.9 g |
| Bird | Anas carolinensis | Green-winged teal / American teal | 2.72 g |
| Bird | Anas castanea | Chestnut teal | 3.84 g |
| Bird | Anas crecca | Eurasian teal / Common teal / Eurasian green-winged teal | 2.77 g |
| Bird | Anas eatoni | Eaton’s pintail / Southern pintail | 3.63 g |
| Bird | Anas erythrorhyncha | Red-billed teal / Red-billed duck | 4.4 g |
| Bird | Anas flavirostris | Yellow-billed teal | 3.69 g |
| Bird | Anas georgica | Yellow-billed pintail | 4.16 g |
| Bird | Anas gracilis | Grey teal | 3.64 g |
| Bird | Anas laysanensis | Laysan duck / Laysan teal / Koloa pōhaka | 3.68 g |
| Bird | Anas luzonica | Philippine duck / Patong gubat | 5.1 g |
| Bird | Anas platyrhynchos | Mallard / Wild duck | 5.55 g |
| Bird | Anas poecilorhyncha | Indian spot-billed duck | 6.17 g |
| Bird | Anas superciliosa | Pacific black duck / Grey duck / Pārera | 5.52 g |
| Bird | Anas undulata | Yellow-billed duck | 5.5 g |
| Bird | Anas wyvilliana | Hawaiian duck / Koloa Maoli | 4.7 g |
| Bird | Anastomus lamelligerus | African openbill | 10.8 g |
| Bird | Anastomus oscitans | Asian openbill / Asian openbill stork | 11 g |
| Amphibian | Anaxyrus woodhousii | Woodhouse’s toad | 74.2 mg |
| Bird | Andigena hypoglauca | Grey-breasted mountain toucan | 4.82 g |
| Insect | Andrena angustior | Groove-faced mining bee | 0.406 mg |
| Insect | Andrena barbilabris | Bearded miner bee | 0.915 mg |
| Insect | Andrena bicolor | Gwynne’s mining bee | 0.703 mg |
| Insect | Andrena carlini | Carlinville miner bee | 1.56 mg |
| Insect | Andrena chrysosceles | Hawthorn mining bee | 0.831 mg |
| Insect | Andrena cineraria | Ashy mining bee / Danubian miner / Grey mining bee | 1.63 mg |
| Insect | Andrena dorsata | Short-fringed mining bee | 0.718 mg |
| Insect | Andrena dunningi | Dunning’s miner bee | 1.35 mg |
| Insect | Andrena flavipes | Yellow-legged mining bee | 1.15 mg |
| Insect | Andrena fucata | Painted mining bee | 0.701 mg |
| Insect | Andrena fulva | Tawny mining bee | 1.59 mg |
| Insect | Andrena gravida | White-bellied mining bee | 1.59 mg |
| Insect | Andrena haemorrhoa | Orange-tailed mining bee | 1.17 mg |
| Insect | Andrena hirticincta | Hairy-belted miner bee | 1.17 mg |
| Insect | Andrena hispania | – | 2.36 mg |
| Insect | Andrena labiata | Red-girdled mining bee | 0.58 mg |
| Insect | Andrena milwaukeensis | Milwaukee miner bee | 1 mg |
| Insect | Andrena miserabilis | Smooth-faced miner bee | 0.6 mg |
| Insect | Andrena morio | – | 1.55 mg |
| Insect | Andrena nigriceps | Black-headed mining bee | 0.814 mg |
| Insect | Andrena nigroaenea | Buffish mining bee | 1.71 mg |
| Insect | Andrena nitida | Grey-patched mining bee | 1.97 mg |
| Insect | Andrena nubecula | Cloudy-winged miner bee | 0.591 mg |
| Insect | Andrena ovatula | Small gorse mining bee | 0.746 mg |
| Insect | Andrena pilipes | Black mining bee | 1.47 mg |
| Insect | Andrena rhyssonota | – | 0.462 mg |
| Insect | Andrena semilaevis | Shiny-margined mini-miner | 0.254 mg |
| Insect | Andrena simplex | Simple miner bee | 0.733 mg |
| Insect | Andrena subopaca | Impunctate mini-miner | 0.343 mg |
| Insect | Andrena tibialis | Grey-gastered mining bee | 1.65 mg |
| Insect | Andrena trimmerana | Trimmer’s mining bee | 1.77 mg |
| Insect | Andrena varians | Blackthorn mining bee | 1.17 mg |
| Insect | Andrena vicina | Neighbouring miner bee | 1.52 mg |
| Insect | Andrena wilkella | Wilke’s mining bee | 1.11 mg |
| Amphibian | Aneides lugubris | Arboreal salamander | 23.5 mg |
| Insect | Angiopolybia pallens | – | 0.146 mg |
| Insect | Angiopolybia zischkai | – | 0.156 mg |
| Fish | Anguilla anguilla | European eel | 170 mg |
| Reptile | Anguis fragilis | Common slow worm / Deaf adder / Blindworm / Long-cripple | 41.5 mg |
| Reptile | Anguis graeca | Greek slow worm | 36.9 mg |
| Bird | Anhima cornuta | Horned screamer | 8.5 g |
| Bird | Anhinga anhinga | Anhinga / American darter / Snakebird / Water turkey | 4.6 g |
| Bird | Anhinga melanogaster | Oriental darter | 4.72 g |
| Bird | Anhinga novaehollandiae | Australasian darter / Australian darter | 4.72 g |
| Bird | Anisognathus somptuosus | Blue-winged mountain tanager | 1.54 g |
| Fish | Anisotremus surinamensis | Black margate / Black bream / Black thicklip / Dogfish | 1.27 g |
| Fish | Anodontostoma chacunda | Chacunda gizzard shad | 155 mg |
| Bird | Anodorhynchus hyacinthinus | Hyacinth macaw / Hyacinthine macaw | 25.6 g |
| Reptile | Anolis auratus | Grass anole | 73 mg |
| Reptile | Anolis carolinensis | Green anole / Carolina anole / Carolina green anole / American anole | 37 mg |
| Reptile | Anolis cristatellus | Crested anole / Common Puerto Rican anole | 89.9 mg |
| Reptile | Anolis cybotes | Large-headed anole / Tiburon stout anole / Hispaniolan stout anole | 69.2 mg |
| Reptile | Anolis equestris | Knight anole / Cuban knight anole / Cuban giant anole | 260 mg |
| Reptile | Anolis evermanni | Emerald anole / Evermann’s anole / Small green anole | 67.4 mg |
| Reptile | Anolis gundlachi | Yellow-chinned anole / Gundlach’s anole / Yellow-beard anole | 83.3 mg |
| Reptile | Anolis krugi | Krug’s anole / Olive bush anole / Orange dewlap anole | 45.6 mg |
| Reptile | Anolis pulchellus | Puerto Rican anole / Puerto Rican bush anole / Snake anole / Sharp-mouthed lizard | 37 mg |
| Reptile | Anolis roquet | Martinique anole / Martinique’s anole / Savannah anole | 51.8 mg |
| Reptile | Anolis sagrei | Cuban brown anole / Bahaman anole / De la Sagra’s anole | 30 mg |
| Reptile | Anolis stratulus | Spotted anole / Puerto Rican spotted anole / Banded anole / Saddled anole | 58.9 mg |
| Fish | Anoplogaster cornuta | Common fangtooth | 70 mg |
| Bird | Anorrhinus galeritus | Bushy-crested hornbill | 9.95 g |
| Mammal | Anoura caudifer | Tailed tailless bat | 423 mg |
| Mammal | Anoura geoffroyi | Geoffroy’s tailless bat | 584 mg |
| Bird | Anous ceruleus | Blue noddy / Blue-grey noddy / Hinaokū / Manuohina | 1.16 g |
| Bird | Anous minutus | Black noddy / White-capped noddy | 1.56 g |
| Bird | Anous stolidus | Brown noddy / Common noddy / Noddy tern | 2.31 g |
| Bird | Anser albifrons | Greater white-fronted goose / White-fronted goose | 9.26 g |
| Bird | Anser anser | Greylag goose | 11.1 g |
| Bird | Anser caerulescens | Snow goose | 11 g |
| Bird | Anser cygnoides | Swan goose | 10.3 g |
| Bird | Anser erythropus | Lesser white-fronted goose | 6.7 g |
| Bird | Anser fabalis | Taiga bean goose | 11.3 g |
| Bird | Anser rossii | Ross’s goose | 7.1 g |
| Bird | Anseranas semipalmata | Magpie goose | 9.12 g |
| Mammal | Antechinomys laniger | Kultarr / Jerboa-marsupial / Marsupial jerboa | 478 mg |
| Mammal | Antechinus agilis | Agile antechinus | 570 mg |
| Mammal | Antechinus bellus | Fawn antechinus | 641 mg |
| Mammal | Antechinus flavipes | Yellow-footed antechinus / Mardo | 655 mg |
| Mammal | Antechinus leo | Cinnamon antechinus / Iron Ranges antechinus / Cape York antechinus | 764 mg |
| Mammal | Antechinus minimus | Swamp antechinus / Little Tasmanian marsupial mouse | 753 mg |
| Mammal | Antechinus stuartii | Brown antechinus / Stuart’s antechinus / Macleay’s marsupial mouse | 774 mg |
| Mammal | Antechinus subtropicus | Subtropical antechinus | 733 mg |
| Mammal | Antechinus swainsonii | Dusky antechinus / Swainson’s antechinus / Dusky marsupial mouse | 1.11 g |
| Fish | Antennablennius australis | Moustached blenny | 13.8 mg |
| Insect | Anthidium florentinum | Florentine wool carder bee | 4.46 mg |
| Insect | Anthidium manicatum | European wool carder bee | 2.05 mg |
| Insect | Anthidium oblongatum | Oblong woolcarder bee | 1.82 mg |
| Bird | Anthobaphes violacea | Orange-breasted sunbird | 445 mg |
| Bird | Anthochaera carunculata | Red wattlebird | 2.28 g |
| Bird | Anthochaera chrysoptera | Little wattlebird / Brush wattlebird | 1.76 g |
| Bird | Anthochaera phrygia | Regent honeyeater | 1.07 g |
| Insect | Anthophora dispar | – | 4.53 mg |
| Insect | Anthophora plumipes | Hairy-footed flower bee | 3.75 mg |
| Insect | Anthophora quadrimaculata | Four-banded flower bee | 2.22 mg |
| Insect | Anthophora retusa | Potter flower bee | 2.1 mg |
| Bird | Anthracoceros coronatus | Malabar pied hornbill / Lesser pied hornbill | 8.27 g |
| Bird | Anthracoceros malayanus | Black hornbill | 11.6 g |
| Bird | Anthracothorax dominicus | Hispaniolan mango | 238 mg |
| Bird | Anthracothorax viridigula | Green-throated mango | 275 mg |
| Bird | Anthreptes malacensis | Brown-throated sunbird / Plain-throated sunbird | 600 mg |
| Bird | Anthus berthelotii | Berthelot’s pipit | 520 mg |
| Bird | Anthus campestris | Tawny pipit | 500 mg |
| Bird | Anthus novaeseelandiae | New Zealand pipit / Pīhoihoi | 757 mg |
| Bird | Anthus pratensis | Meadow pipit | 507 mg |
| Bird | Anthus spinoletta | Water pipit | 580 mg |
| Bird | Anthus trivialis | Tree pipit | 622 mg |
| Mammal | Antidorcas marsupialis | Springbok / Springbuck | 135 g |
| Bird | Antigone antigone | Sarus crane | 20.7 g |
| Bird | Antigone canadensis | Sandhill crane | 12 g |
| Bird | Antigone rubicunda | Brolga / Australian crane / Native companion | 18.3 g |
| Mammal | Antilocapra americana | Pronghorn / American antelope / Prong buck / Pronghorn antelope | 128 g |
| Mammal | Antilope cervicapra | Blackbuck / Indian antelope | 138 g |
| Bird | Antrostomus carolinensis | Chuck-will’s-widow | 1.41 g |
| Bird | Antrostomus vociferus | Eastern whip-poor-will / Whip-o-will | 850 mg |
| Bird | Anumbius annumbi | Firewood-gatherer | 1.22 g |
| Fish | Anyperodon leucogrammicus | Slender grouper | 711 mg |
| Mammal | Aonyx capensis | African clawless otter / Cape clawless otter / Groot otter | 94.6 g |
| Mammal | Aonyx cinereus | Asian small-clawed otter / Oriental small-clawed otter / Small-clawed otter | 38.1 g |
| Mammal | Aotus azarae | Azara’s night monkey / Azara’s owl monkey / Southern night monkey / Mirikiná | 20.9 g |
| Mammal | Aotus lemurinus | Gray-bellied night monkey / Grey-legged douroucouli / Lemurine owl monkey | 89.3 g |
| Mammal | Aotus trivirgatus | Three-striped night monkey / Northern night monkey / Northern owl monkey | 16.5 g |
| Mammal | Aotus vociferans | Spix’s night monkey / Colombian gray night monkey / Noisy night monkey / Spix’s owl monkey | 20.2 g |
| Mammal | Aotus zonalis | Panamanian night monkey / Chocoan night monkey | 118 g |
| Bird | Apalis binotata | Lowland masked apalis / Masked apalis | 435 mg |
| Bird | Apalis thoracica | Bar-throated apalis | 528 mg |
| Bird | Apaloderma narina | Narina trogon | 1.57 g |
| Reptile | Apalone ferox | Florida softshell turtle | 2.5 g |
| Fish | Aphanopus carbo | Black scabbardfish | 818 mg |
| Fish | Aphareus furca | Small toothed jobfish / Blue smalltooth jobfish / Fork-tailed snapper / Snapper jobbyfish | 719 mg |
| Fish | Aphareus rutilans | Rusty jobfish / Ironjaw snapper / Red smalltooth job / Silvermouth | 2.88 g |
| Bird | Aphelocephala leucopsis | Southern whiteface | 560 mg |
| Bird | Aphelocephala nigricincta | Banded whiteface | 487 mg |
| Bird | Aphelocoma coerulescens | Florida scrub jay | 2.9 g |
| Bird | Aphelocoma ultramarina | Transvolcanic jay | 3.73 g |
| Bird | Aphrastura spinicauda | Thorn-tailed rayadito | 840 mg |
| Bird | Aphrodroma brevirostris | Kerguelen petrel | 4.41 g |
| Insect | Apis mellifera | Western honey bee | 1.55 mg |
| Fish | Aplocheilus panchax | Blue panchax / Whitespot | 13 mg |
| Mammal | Aplodontia rufa | Mountain beaver | 7 g |
| Bird | Aplonis atrifusca | Samoan starling | 2.38 g |
| Bird | Aplonis metallica | Metallic starling / Shining starling | 1.64 g |
| Mammal | Apodemus agrarius | Striped field mouse | 200 mg |
| Mammal | Apodemus flavicollis | Yellow-necked mouse / Yellow-necked field mouse / Yellow-necked wood mouse | 700 mg |
| Mammal | Apodemus sylvaticus | Wood mouse / Common field mouse / Long-tailed field mouse / European wood mouse | 585 mg |
| Fish | Apogon coccineus | Ruby cardinalfish | 20 mg |
| Fish | Apogon maculatus | Flamefish | 50 mg |
| Fish | Apogon semiornatus | Oblique-banded cardinalfish | 33 mg |
| Fish | Apogonichthyoides timorensis | Timor cardinalfish | 74 mg |
| Insect | Apoica pallens | Central American paper wasp | 0.351 mg |
| Fish | Apolemichthys arcuatus | Banded angelfish / Bandit angelfish / Three spine angelfish | 298 mg |
| Fish | Apolemichthys xanthotis | Yellow-ear angelfish / Red Sea angelfish | 335 mg |
| Fish | Aporops bilinearis | Blotched podge | 39.6 mg |
| Fish | Aprion virescens | Green jobfish / Gray jobfish / Gray snapper / Slender snapper | 2.02 g |
| Fish | Apristurus sinensis | South China catshark | 2.79 g |
| Bird | Aprosmictus erythropterus | Red-winged parrot | 3.99 g |
| Bird | Aptenodytes forsteri | Emperor penguin | 46.1 g |
| Bird | Aptenodytes patagonicus | King penguin | 28.7 g |
| Fish | Apteronotus albifrons | Black ghost knifefish | 171 mg |
| Fish | Apteronotus leptorhynchus | Brown ghost knifefish | 156 mg |
| Bird | Apteryx australis | Southern brown kiwi / Common kiwi / Tokoeka | 11.9 g |
| Bird | Apteryx mantelli | North Island brown kiwi | 9.97 g |
| Bird | Apteryx owenii | Little spotted kiwi / Little grey kiwi / Kiwi pukupuku | 7.56 g |
| Bird | Apteryx rowi | Okarito kiwi / Okarito brown kiwi | 10.9 g |
| Fish | Aptychotrema rostrata | Eastern shovelnose ray | 2.58 g |
| Bird | Apus apus | Common swift | 665 mg |
| Bird | Apus pallidus | Pallid swift | 746 mg |
| Bird | Aquila audax | Wedge-tailed eagle / Eaglehawk | 16.2 g |
| Bird | Aquila chrysaetos | Golden eagle | 17 g |
| Bird | Aquila fasciata | Bonelli’s eagle | 10.9 g |
| Bird | Aquila heliaca | Eastern imperial eagle | 15.5 g |
| Bird | Aquila rapax | Tawny eagle | 13.9 g |
| Bird | Aquila verreauxii | Verreaux’s eagle / Black eagle | 17 g |
| Bird | Ara ambiguus | Great green macaw / Buffon’s macaw / Great military macaw | 18.1 g |
| Bird | Ara ararauna | Blue-and-yellow macaw / Blue-and-gold macaw | 17.3 g |
| Bird | Ara chloropterus | Red-and-green macaw / Green-winged macaw | 22.5 g |
| Bird | Ara macao | Scarlet macaw / Red-and-yellow macaw / Red-and-blue macaw / Red-breasted macaw | 18.6 g |
| Bird | Ara militaris | Military macaw | 19.5 g |
| Bird | Ara severus | Chestnut-fronted macaw / Severe macaw | 10.4 g |
| Bird | Arachnothera longirostra | Little spiderhunter | 539 mg |
| Bird | Aramides cajaneus | Grey-cowled wood rail / Grey-necked wood rail | 4.02 g |
| Bird | Aramides ypecaha | Giant wood rail | 5.08 g |
| Bird | Aramus guarauna | Limpkin / Carrao / Courlan / Crying bird | 6.58 g |
| Fish | Arapaima gigas | Arapaima / Pirarucu / Paiche | 1.14 g |
| Bird | Aratinga jandaya | Jandaya parakeet / Jenday conure | 3.94 g |
| Bird | Aratinga nenday | Nanday parakeet / Black-hooded parakeet / Nanday conure | 4.71 g |
| Bird | Aratinga solstitialis | Sun conure / Sun parakeet | 4.71 g |
| Bird | Aratinga weddellii | Dusky-headed parakeet / Weddell’s conure / Dusky-headed conure | 4.15 g |
| Dinosaur | Archaeopteryx lithographica | Archaeopteryx / Urvogel | 1.47 g |
| Bird | Archilochus colubris | Ruby-throated hummingbird | 155 mg |
| Mammal | Arctictis binturong | Binturong / Bearcat | 41.6 g |
| Mammal | Arctocebus aureus | Golden angwantibo | 5.88 g |
| Mammal | Arctocebus calabarensis | Calabar angwantibo / Calabar potto | 7.13 g |
| Mammal | Arctocephalus australis | South American fur seal | 308 g |
| Mammal | Arctocephalus forsteri | Australasian fur seal / South Australian fur seal / New Zealand fur seal / Antipodean fur seal | 320 g |
| Mammal | Arctocephalus galapagoensis | Galápagos fur seal | 291 g |
| Mammal | Arctocephalus gazella | Antarctic fur seal | 340 g |
| Mammal | Arctocephalus philippii | Juan Fernández fur seal | 415 g |
| Mammal | Arctocephalus pusillus | Cape fur seal / Afro-Australian fur seal | 374 g |
| Mammal | Arctocephalus tropicalis | Subantarctic fur seal | 326 g |
| Mammal | Arctocyon primaevus | – | 38 g |
| Mammal | Arctocyonides arenae | – | 8.3 g |
| Mammal | Arctogalidia trivirgata | Small-toothed palm civet / Three-striped palm civet | 22 g |
| Mammal | Arctonyx collaris | Greater hog badger | 49.4 g |
| Fish | Arctozenus risso | Spotted barracudina / Ribbon barracudina | 109 mg |
| Bird | Ardea alba | Great egret / Common egret / Large egret / Great white egret | 5.74 g |
| Bird | Ardea cinerea | Grey heron | 7.64 g |
| Bird | Ardea cocoi | Cocoi heron | 9 g |
| Bird | Ardea herodias | Great blue heron | 9.48 g |
| Bird | Ardea ibis | Western cattle egret | 4.09 g |
| Bird | Ardea intermedia | Medium egret / Median egret / Smaller egret / Intermediate egret | 4.57 g |
| Bird | Ardea melanocephala | Black-headed heron | 7.8 g |
| Bird | Ardea pacifica | White-necked heron / Pacific heron | 5.35 g |
| Bird | Ardea sumatrana | Great-billed heron | 9.04 g |
| Bird | Ardenna grisea | Sooty shearwater | 3.63 g |
| Bird | Ardenna pacifica | Wedge-tailed shearwater / Muttonbird | 4.11 g |
| Bird | Ardenna tenuirostris | Short-tailed shearwater / Slender-billed shearwater / Yolla / Muttonbird | 5.03 g |
| Bird | Ardeola ralloides | Squacco heron | 2.4 g |
| Bird | Ardeotis arabs | Arabian bustard | 10 g |
| Bird | Ardeotis australis | Australian bustard / Plains turkey / Bush turkey | 12.1 g |
| Bird | Ardeotis kori | Kori bustard | 13.4 g |
| Mammal | Ardops nichollsi | Tree bat | 610 mg |
| Bird | Arenaria interpres | Ruddy turnstone | 1.32 g |
| Bird | Arenaria melanocephala | Black turnstone | 1.59 g |
| Fish | Arenigobius frenatus | Half-bridled goby | 19.9 mg |
| Fish | Argentina silus | Greater argentine / Atlantic argentine / Great silver smelt / Herring smelt | 541 mg |
| Fish | Argentina sphyraena | The lesser silver smelt / Lesser argentine | 197 mg |
| Spider | Argiope argentata | Silver argiope / Silver garden spider | 0.345 mg |
| Bird | Argusianus argus | Great argus / Greater argus | 5.88 g |
| Spider | Argyrodes elevatus | Dew-drop spider | 0.045 mg |
| Fish | Argyropelecus aculeatus | Lovely hatchetfish / Atlantic silver hatchetfish | 38.8 mg |
| Fish | Argyropelecus lychnus | Tropical hatchetfish | 13.5 mg |
| Fish | Argyropelecus olfersii | – | 34.3 mg |
| Fish | Argyrops filamentosus | Soldierbream | 790 mg |
| Fish | Argyrops spinifer | King soldierbream / Bowen snapper / Long-spined red bream / Longfin snapper | 1.27 g |
| Fish | Ariosoma balearicum | Bandtooth conger / Baleares conger / Balearic conger | 54.6 mg |
| Fish | Aristostomias scintillans | Shiny loosejaw | 11.8 mg |
| Fish | Arothron hispidus | White-spotted puffer fish | 269 mg |
| Fish | Arothron immaculatus | Immaculate puffer / Yellow-eyed puffer | 181 mg |
| Fish | Arothron meleagris | Guineafowl puffer / Golden puffer | 388 mg |
| Fish | Arothron nigropunctatus | Blackspotted puffer / Dog-faced puffer | 377 mg |
| Fish | Arothron stellatus | Stellate pufferfish / Starry puffer / Starry toadfish | 1.04 g |
| Bird | Arremon aurantiirostris | Orange-billed sparrow | 1.12 g |
| Bird | Arremon brunneinucha | Chestnut-capped brushfinch | 1.6 g |
| Bird | Arremonops conirostris | Black-striped sparrow | 1.34 g |
| Bird | Arses telescophthalmus | Frilled monarch / Australian frilled monarch / Frilled flycatcher | 642 mg |
| Bird | Artamus cinereus | Black-faced woodswallow | 952 mg |
| Bird | Artamus cyanopterus | Dusky woodswallow | 1.04 g |
| Bird | Artamus leucorynchus | White-breasted woodswallow | 1.12 g |
| Bird | Artamus maximus | Great woodswallow / Greater woodswallow / Giant woodswallow / New Guinea woodswallow | 1.71 g |
| Bird | Artamus minor | Little woodswallow | 539 mg |
| Bird | Artamus personatus | Masked woodswallow | 1.07 g |
| Bird | Artamus superciliosus | White-browed woodswallow | 1.08 g |
| Fish | Artediellus uncinatus | Arctic hookear sculpin | 43.8 mg |
| Amphibian | Arthroleptis nimbaensis | Mount Nimba screeching frog | 17.3 mg |
| Mammal | Artibeus concolor | Brown fruit-eating bat | 633 mg |
| Mammal | Artibeus jamaicensis | Jamaican fruit bat | 978 mg |
| Mammal | Artibeus lituratus | Great fruit-eating bat | 1.11 g |
| Mammal | Arvicanthis niloticus | African grass rat | 1.32 g |
| Mammal | Arvicola amphibius | European water vole / Northern water vole / Water rat | 1.63 g |
| Mammal | Asellia tridens | Trident bat / Trident leaf-nosed bat | 240 mg |
| Mammal | Aselliscus stoliczkanus | Stoliczka’s trident bat | 150 mg |
| Mammal | Aselliscus tricuspidatus | Temminck’s trident bat | 134 mg |
| Bird | Ashbyia lovensis | Gibberbird / Desert chat | 692 mg |
| Bird | Asio capensis | Marsh owl | 6.2 g |
| Bird | Asio clamator | Striped owl | 6.4 g |
| Bird | Asio flammeus | Short-eared owl | 5.53 g |
| Bird | Asio otus | Long-eared owl / Northern long-eared owl / Lesser horned owl / Cat owl | 5.57 g |
| Reptile | Aspidelaps lubricus | Cape coral snake / Cape coral cobra / Coral shield cobra | 106 mg |
| Fish | Aspidophoroides monopterygius | Alligatorfish / Aleutian alligatorfish / Atlantic alligatorfish | 55 mg |
| Reptile | Aspidoscelis deppii | Blackbelly racerunner | 94 mg |
| Reptile | Aspidoscelis gularis | Texas spotted whiptail | 66.9 mg |
| Reptile | Aspidoscelis tigris | Western whiptail | 137 mg |
| Fish | Assessor macneilli | Blue devilfish / Blue scissortail | 22.8 mg |
| Fish | Asterropteryx semipunctata | Starry goby | 12.2 mg |
| Fish | Astronotus ocellatus | Oscar / Tiger Oscar / Velvet Cichlid / Marble Cichlid | 320 mg |
| Bird | Astur cooperii | Cooper’s hawk / Big blue darter / Chicken hawk / Flying cross | 4.87 g |
| Bird | Astur gentilis | Eurasian goshawk / Goshawk | 7.77 g |
| Fish | Asymbolus analis | Australian spotted catshark | 940 mg |
| Fish | Asymbolus rubiginosus | Orange-spotted catshark / Rusty catshark | 800 mg |
| Mammal | Atelerix albiventris | Four-toed hedgehog / African pygmy hedgehog | 1.88 g |
| Mammal | Atelerix algirus | North African hedgehog / Algerian hedgehog | 2.89 g |
| Mammal | Ateles belzebuth | White-bellied spider monkey | 117 g |
| Mammal | Ateles chamek | Peruvian spider monkey / Black-faced black spider monkey | 101 g |
| Mammal | Ateles fusciceps | Black-headed spider monkey | 114 g |
| Mammal | Ateles geoffroyi | Geoffroy’s spider monkey / Black-handed spider monkey / Central American spider monkey | 102 g |
| Mammal | Ateles hybridus | Brown spider monkey / Variegated spider monkey | 103 g |
| Mammal | Ateles marginatus | White-cheeked spider monkey | 97 g |
| Mammal | Ateles paniscus | Red-faced spider monkey / Guiana spider monkey / Red-faced black spider monkey | 108 g |
| Mammal | Atelocynus microtis | Short-eared dog / Small-eared dog / Short-eared fox / Small eared zorro | 62.2 g |
| Amphibian | Atelopus chiriquiensis | Chiriqui harlequin frog / Lewis’ stubfoot toad | 20.8 mg |
| Amphibian | Atelopus flavescens | Cayenne stubfoot toad | 17.8 mg |
| Amphibian | Atelopus varius | Costa Rican variable harlequin toad / Clown frog | 19.9 mg |
| Bird | Athene cunicularia | Burrowing owl | 3.46 g |
| Bird | Athene jacquinoti | West Solomons owl / West Solomons boobook | 4.54 g |
| Bird | Athene noctua | Little owl / Owl of Athena / Owl of Minerva | 4.03 g |
| Fish | Atherina presbyter | Sand smelt | 89.2 mg |
| Fish | Atherinomorus lacunosus | Hardyhead silverside / Broad-banded hardyhead / Broad-banded silverside / Capricorn hardyhead | 113 mg |
| Mammal | Atherurus africanus | African brush-tailed porcupine | 21.6 g |
| Mammal | Atherurus macrourus | Asiatic brush-tailed porcupine | 31.6 g |
| Mammal | Atilax paludinosus | Marsh mongoose / Water mongoose | 28.2 g |
| Bird | Atimastillas flavicollis | Yellow-gorgeted greenbul / Yellow-throated leaflove | 1.53 g |
| Bird | Atrichornis clamosus | Noisy scrubbird | 1.76 g |
| Insect | Atta colombica | – | 0.115 mg |
| Bird | Attila spadiceus | Bright-rumped attila / Polymorphic attila | 1.22 g |
| Fish | Atule mate | Yellowtail scad / Northern yellowtail scad / One-finlet scad / Deep trevally | 661 mg |
| Amphibian | Atympanophrys shapingensis | Shaping horned toad | 46.7 mg |
| Insect | Augochlora pura | Pure green sweat bee | 0.66 mg |
| Insect | Augochlorella aurata | Golden green sweat bee | 0.352 mg |
| Insect | Augochloropsis metallica | Metallic epauletted-sweat bee | 0.701 mg |
| Bird | Aulacorhynchus sulcatus | Groove-billed toucanet | 2.84 g |
| Fish | Aulonocranus dewindti | – | 131 mg |
| Fish | Aulostomus chinensis | Chinese trumpetfish | 636 mg |
| Bird | Auriparus flaviceps | Verdin | 458 mg |
| Bird | Automolus infuscatus | Olive-backed foliage-gleaner | 1.17 g |
| Bird | Automolus ochrolaemus | Ochre-throated foliage-gleaner | 1.18 g |
| Mammal | Avahi laniger | Eastern woolly lemur / Eastern avahi / Gmelin’s woolly lemur | 10.5 g |
| Mammal | Avahi occidentalis | Western woolly lemur / Western avahi | 8.81 g |
| Bird | Aviceda leuphotes | Black baza | 3.4 g |
| Bird | Aviceda subcristata | Pacific baza / Crested hawk / Crested baza / Pacific cuckoo-falcon | 4.87 g |
| Fish | Awaous lateristriga | West African freshwater goby | 65.3 mg |
| Fish | Awaous ocellaris | – | 55.2 mg |
| Mammal | Axis axis | Chital / Spotted deer / Axis deer | 219 g |
| Mammal | Axis porcinus | Indian hog deer / Indochinese hog deer | 142 g |
| Bird | Aythya affinis | Lesser scaup / Little bluebill / Broadbill | 4.34 g |
| Bird | Aythya americana | Redhead | 5.55 g |
| Bird | Aythya australis | Hardhead / White-eyed duck | 5.07 g |
| Bird | Aythya collaris | Ring-necked duck | 5.14 g |
| Bird | Aythya ferina | Common pochard / European pochard / Eurasian pochard | 5.58 g |
| Bird | Aythya fuligula | Tufted duck / Tufted pochard | 4.74 g |
| Bird | Aythya marila | Greater scaup / Scaup | 5.33 g |
| Bird | Aythya nyroca | Ferruginous duck / Common white-eye / Ferruginous pochard / White-eyed pochard | 5.6 g |
| Bird | Aythya valisineria | Canvasback | 6.42 g |
| Fish | Azurina cyanea | Blue chromis | 88 mg |
| Fish | Azurina lepidolepis | Scaly chromis | 102 mg |
| Mammal | Babyrousa babyrussa | Buru babirusa / Moluccan babirusa / Golden babirusa / Hairy babirusa | 130 g |
| Bird | Baeolophus bicolor | Tufted titmouse | 1.05 g |
| Fish | Baileychromis centropomoides | – | 133 mg |
| Mammal | Balaena mysticetus | Bowhead whale / Greenland right whale / Arctic whale / Polar whale | 2.75 kg |
| Bird | Balaeniceps rex | Shoebill / Whale-headed stork / Whalebill / Shoe-billed stork | 22.8 g |
| Mammal | Balaenoptera acutorostrata | Common minke whale / Northern minke whale / Little piked whale /Lesser rorqual | 2.78 kg |
| Mammal | Balaenoptera borealis | Sei whale | 4.94 kg |
| Mammal | Balaenoptera edeni | Eden’s whale / Sittang whale / Bryde’s whale | 3.75 kg |
| Mammal | Balaenoptera musculus | Blue whale | 5.3 kg |
| Mammal | Balaenoptera physalus | Fin whale / common rorqual / Finback whale | 6.57 kg |
| Bird | Balearica pavonina | Black crowned crane | 13.4 g |
| Mammal | Balionycteris maculata | Spotted-winged fruit bat | 511 mg |
| Fish | Balistapus undulatus | Orange-lined triggerfish / Orangestripe triggerfish / Red-lined triggerfish / Striped triggerfish | 527 mg |
| Fish | Balistes capriscus | Grey triggerfish / Gray triggerfish | 772 mg |
| Fish | Balistoides conspicillum | Clown triggerfish / Bigspotted triggerfish | 969 mg |
| Bird | Bambusicola thoracicus | Chinese bamboo partridge | 1.82 g |
| Mammal | Barbastella barbastellus | Western barbastelle / Barbastelle / Barbastelle bat | 184 mg |
| Bird | Barnardius zonarius | Australian ringneck | 3.97 g |
| Bird | Bartramia longicauda | Upland sandpiper / Upland plover / Bartram’s sandpiper / Papabotte | 1.35 g |
| Mammal | Barylambda churchilli | – | 102 g |
| Bird | Baryphthengus ruficapillus | Rufous-capped motmot | 2.75 g |
| Bird | Basileuterus culicivorus | Golden-crowned warble | 600 mg |
| Reptile | Basiliscus plumifrons | Plumed basilisk / Green basilisk / Double crested basilisk / Jesus Christ lizard | 378 mg |
| Mammal | Bassaricyon alleni | Eastern lowland olingo | 18.9 g |
| Mammal | Bassaricyon gabbii | Northern olingo / Bushy-tailed olingo / Olingo | 17.5 g |
| Mammal | Bassariscus astutus | Ringtail / Ring-tailed cat / Miner’s cat / Civet cat | 16.4 g |
| Mammal | Bassariscus sumichrasti | Cacomistle / Cacomixtle | 30.6 g |
| Fish | Bathybates fasciatus | – | 283 mg |
| Fish | Bathybates ferox | Bathybates ferox | 248 mg |
| Fish | Bathybates leo | – | 111 mg |
| Mammal | Bathyergus suillus | Cape dune mole-rat | 3.75 g |
| Fish | Bathygobius cocosensis | Cocos frill-goby | 58.8 mg |
| Fish | Bathygobius cyclopterus | Spotted frillgoby | 23 mg |
| Fish | Bathygobius fuscus | Dusky frillgoby / Brown frillfin | 38.4 mg |
| Fish | Bathygobius krefftii | Krefft’s frillgoby | 35 mg |
| Fish | Bathygobius niger | Black minigoby | 28.6 mg |
| Fish | Bathygobius soporator | Frillfin goby | 40.2 mg |
| Fish | Bathyraja spinicauda | Spinytail skate | 4.68 g |
| Fish | Bathytoshia brevicaudata | Short-tail stingray / Smooth stingray | 30.3 g |
| Fish | Bathytoshia centroura | Roughtail stingray | 18.3 g |
| Bird | Batis capensis | Cape batis | 702 mg |
| Amphibian | Batrachoseps attenuatus | California slender salamander | 3.38 mg |
| Mammal | Bdeogale crassicauda | Bushy-tailed mongoose | 17 g |
| Mammal | Beamys hindei | Lesser hamster-rat / Long-tailed pouched rat | 1.11 g |
| Reptile | Bellatorias frerei | Major skink | 432 mg |
| Fish | Belone belone | Garfish / Garpike / Needlefish / Sea needle | 409 mg |
| Fish | Benthochromis tricoti | – | 201 mg |
| Mammal | Berylmys bowersi | Bower’s white-toothed rat | 4.63 g |
| Fish | Beryx decadactylus | Alfonsino / Alfonsin / Longfinned beryx / Red bream | 890 mg |
| Fish | Beryx splendens | Splendid alfonsino | 782 mg |
| Mammal | Bettongia gaimardi | Eastern bettong / Southern bettong / Tasmanian bettong | 11.9 g |
| Mammal | Bettongia lesueur | Boodie / Burrowing bettong / Lesueur’s rat-kangaroo | 10.7 g |
| Mammal | Bettongia ogilbyi | Woylie / Brush-tailed bettong | 9.73 g |
| Mammal | Bettongia tropica | Northern bettong | 9.08 g |
| Bird | Bias musicus | Black-and-white shrike-flycatcher / Black-and-white flycatcher / Vanga flycatcher | 870 mg |
| Crab | Birgus latro | Coconut crab / Robber crab / Palm thief | 10.5 mg |
| Mammal | Bison bison | American bison / American buffalo / Buffalo | 396 g |
| Reptile | Bitis arietans | African puff adder / Common puff adder | 212 mg |
| Bird | Biziura lobata | Musk duck | 9.03 g |
| Insect | Blaberus craniifer | Death’s head cockroach | 9.7 mg |
| Mammal | Blarina brevicauda | Northern short-tailed shrew | 313 mg |
| Fish | Blenniella chrysospilos | Red-spotted blenny | 15.5 mg |
| Fish | Blenniella paula | Blue-dashed rockskipper | 50.8 mg |
| Fish | Blenniella periophthalmus | Blue-dashed rockskipper / Bullethead rockskipper / False rockskipper / Peppered blenny | 42.1 mg |
| Reptile | Boa constrictor | Common boa | 567 mg |
| Reptile | Boa imperator | Central American boa / Colombian boa | 405 mg |
| Amphibian | Boana raniceps | Chaco tree frog | 75.2 mg |
| Fish | Bodianus anthioides | Lyretail hogfish / Lyretail pigfish | 220 mg |
| Fish | Bodianus bilunulatus | Tarry hogfish | 549 mg |
| Fish | Bodianus diana | Diana’s hogfish | 234 mg |
| Fish | Bodianus loxozonus | Blackfin hogfish | 636 mg |
| Fish | Bodianus perditio | Golden-spot hogfish | 821 mg |
| Bird | Bolbopsittacus lunulatus | Guaiabero | 2.75 g |
| Bird | Bolborhynchus lineola | Barred parakeet / Lineolated parakeet / Linnie / Catherine parakeet | 2.08 g |
| Bird | Bolemoreus frenatus | Bridled honeyeater | 1.08 g |
| Bird | Bolemoreus hindwoodi | Eungella honeyeater | 922 mg |
| Fish | Boleophthalmus pectinirostris | Great blue spotted mudskipper | 41.7 mg |
| Amphibian | Bolitoglossa altamazonica | Nauta salamander / Nauta mushroomtongue salamander | 8.8 mg |
| Amphibian | Bombina maxima | Yunnan firebelly toad / Large-webbed bell toad | 43.7 mg |
| Amphibian | Bombina orientalis | Oriental fire-bellied toad | 33.2 mg |
| Amphibian | Bombina variegata | Yellow-bellied toad | 33.9 mg |
| Insect | Bombus fervidus | Golden northern bumble bee / Yellow bumblebee | 3.07 mg |
| Insect | Bombus griseocollis | Brown-belted bumblebee | 3.05 mg |
| Insect | Bombus hortorum | Garden bumblebee / Small garden bumblebee | 2.33 mg |
| Insect | Bombus hypnorum | Tree bumblebee / New garden bumblebee | 2.29 mg |
| Insect | Bombus impatiens | Common eastern bumblebee | 1.87 mg |
| Insect | Bombus jonellus | Heath humble-bee or small heath bumblebee | 2.35 mg |
| Insect | Bombus muscorum | Large carder bee / Moss carder bee | 2.04 mg |
| Insect | Bombus pascuorum | Common carder bee | 2.15 mg |
| Insect | Bombus pratorum | Early bumblebee / Early-nesting bumblebee | 1.78 mg |
| Insect | Bombus terrestris | Buff-tailed bumblebee / Large earth bumblebee | 3.15 mg |
| Insect | Bombus vagans | Half-black bumblebee | 3.15 mg |
| Insect | Bombus vestalis | Vestal cuckoo bumblebee | 2.34 mg |
| Bird | Bombycilla cedrorum | Cedar waxwing / Southern waxwing / Canada robin / Cedar bird | 922 mg |
| Bird | Bombycilla garrulus | Bohemian waxwing | 1.15 g |
| Bird | Bombycilla japonica | Japanese waxwing | 1.1 g |
| Bird | Bonasa umbellus | Ruffed grouse | 2.62 g |
| Fish | Boops boops | Boce / Bogue / Bogue bream | 477 mg |
| Fish | Boreogadus saida | Polar cod / Arctic cod | 185 mg |
| Mammal | Bos grunniens | Yak / Tartary ox / Grunting ox / Hairy cattle | 334 g |
| Mammal | Bos taurus | Cattle / Cow / Bull | 394 g |
| Mammal | Boselaphus tragocamelus | Nilgai | 278 g |
| Bird | Bostrychia hagedash | Hadada ibis / Hadeda | 10.5 g |
| Fish | Bostrychus sinensis | Four-eyed sleeper | 40.3 mg |
| Bird | Botaurus dubius | Black-backed bittern / Black-backed least bittern / Australian little bittern | 1.71 g |
| Bird | Botaurus exilis | Least bittern | 1.33 g |
| Bird | Botaurus flavicollis | Black bittern | 2.69 g |
| Bird | Botaurus lentiginosus | American bittern | 4.76 g |
| Bird | Botaurus minutus | Little bittern | 1.64 g |
| Bird | Botaurus poiciloptilus | Australasian bittern | 6.01 g |
| Bird | Botaurus stellaris | Eurasian bittern / Great bittern | 6.1 g |
| Bird | Botaurus sturmii | Dwarf bittern | 3.7 g |
| Fish | Boulengeromyrus knoepffleri | Knoepffler’s elephantfish | 385 mg |
| Amphibian | Boulenophrys daweimontis | Mount Dawei horned toad | 36.5 mg |
| Amphibian | Boulenophrys jingdongensis | Jingdong horned toad / Jingdong spadefoot toad | 26.3 mg |
| Amphibian | Boulenophrys kuatunensis | Kuatun horned toad / Kuatun spadefoot toad | 17.6 mg |
| Amphibian | Boulenophrys minor | Little horned toad / Dwarf horned toad / Kwangshien spadefoot toad / Tiny spadefoot toad | 38.1 mg |
| Amphibian | Boulenophrys omeimontis | Omei horned toad / Mount Omei spadefoot toad | 88.9 mg |
| Amphibian | Boulenophrys parva | Concave-crowned horned toad / Lesser stream horned frog / Mountain horned frog / Brown horn frog | 31.2 mg |
| Amphibian | Boulenophrys spinata | Spiny-fingered horned toad / Spiny spadefoot toad | 40.1 mg |
| Amphibian | Boulenophrys wushanensis | Wushan horned toad | 46.9 mg |
| Fish | Brachaelurus waddi | Blind shark | 1.39 g |
| Dinosaur | Brachiosaurus altithorax | Brachiosaurus | 186 g |
| Bird | Brachygalba lugubris | Brown jacamar | 445 mg |
| Insect | Brachygastra smithii | – | 0.234 mg |
| Fish | Brachygobius sua | Sua bumblebee goby | 12.7 mg |
| Fish | Brachyhypopomus brevirostris | Bluntnose knifefish | 90 mg |
| Mammal | Brachyphylla cavernarum | Antillean fruit-eating bat | 1.28 g |
| Bird | Brachypteracias leptosomus | Short-legged ground roller | 1.79 g |
| Bird | Brachypteryx montana | Javan shortwing / White-browed shortwing | 860 mg |
| Bird | Brachyramphus marmoratus | Marbled murrelet | 2.43 g |
| Amphibian | Brachytarsophrys chuannanensis | Chuanan short-legged toad | 80.5 mg |
| Amphibian | Brachytarsophrys feae | Fea’s horned frog / Fea’s short-legged toad / Kakhien Hills spadefoot toad | 56.2 mg |
| Mammal | Brachyteles arachnoides | Southern muriqui | 119 g |
| Reptile | Bradypodion thamnobates | Natal Midlands dwarf chameleon | 57 mg |
| Mammal | Bradypus tridactylus | Pale-throated sloth | 24.9 g |
| Mammal | Bradypus variegatus | Brown-throated sloth | 15.6 g |
| Fish | Brama brama | Atlantic pomfret / Ray’s bream | 1.26 g |
| Bird | Branta bernicla | Brant / Brent goose | 6.18 g |
| Bird | Branta canadensis | Canada goose | 11.8 g |
| Bird | Branta leucopsis | Barnacle goose | 7.38 g |
| Bird | Branta ruficollis | Red-breasted goose | 4.94 g |
| Bird | Branta sandvicensis | Nene / Nēnē / Hawaiian goose | 8.53 g |
| Amphibian | Breviceps gibbosus | Cape rain frog / Giant rain frog | 42.7 mg |
| Fish | Brevimyrus niger | – | 94.8 mg |
| Fish | Brienomyrus brachyistius | Baby whale fish / Baby whale mormyrid | 143 mg |
| Reptile | Broadleysaurus major | Sudan plated lizard / Western plated lizard / Great plated lizard / Broadley’s rough-scaled plated lizard | 537 mg |
| Reptile | Bronchocela cristatella | Green crested lizard | 29 mg |
| Fish | Brosme brosme | Cusk / European cusk / Tusk / Torsk | 663 mg |
| Bird | Brotogeris chrysoptera | Golden-winged parakeet | 2.15 g |
| Bird | Brotogeris jugularis | Orange-chinned parakeet / Tovi parakeet | 2.05 g |
| Bird | Brotogeris tirica | Plain parakeet | 2.8 g |
| Bird | Brotogeris versicolurus | White-winged parakeet | 2.48 g |
| Fish | Brotula barbata | Bearded brotula / Atlantic bearded brotula / Sugarfish | 20 mg |
| Fish | Brotula multibarbata | Goatbeard brotula | 418 mg |
| Fish | Bryaninops natans | Redeye goby | 5.85 mg |
| Bird | Bubalornis albirostris | White-billed buffalo weaver | 2.21 g |
| Bird | Bubo africanus | Spotted eagle-owl / African spotted eagle-owl / African eagle-owl | 8.91 g |
| Bird | Bubo bubo | Eurasian eagle-owl / Eagle-owl | 16.8 g |
| Bird | Bubo capensis | Cape eagle-owl | 11.5 g |
| Bird | Bubo scandiacus | Snowy owl / Polar owl / White owl / Arctic owl | 16.7 g |
| Bird | Bubo virginianus | Great horned owl / Tiger owl / Hoot owl | 14.4 g |
| Bird | Bucanetes githagineus | Trumpeter finch | 666 mg |
| Bird | Bucanetes mongolicus | Mongolian finch / Mongolian trumpeter finch | 670 mg |
| Bird | Bucco capensis | Collared puffbird | 1.41 g |
| Bird | Bucephala albeola | Bufflehead | 4.25 g |
| Bird | Bucephala clangula | Common goldeneye | 6.04 g |
| Bird | Bucephala islandica | Barrow’s goldeneye | 6.06 g |
| Bird | Buceros bicornis | Great hornbill / Concave-casqued hornbill / Great Indian hornbill / Great pied hornbill | 18.4 g |
| Bird | Buceros hydrocorax | Rufous hornbill / Philippine hornbill / Kalaw | 17.6 g |
| Bird | Buceros rhinoceros | Rhinoceros hornbill | 17.9 g |
| Bird | Bucorvus abyssinicus | Abyssinian ground hornbill / Northern ground hornbill | 20.8 g |
| Bird | Bucorvus leadbeateri | Southern ground hornbill | 29 g |
| Amphibian | Bufo andrewsi | Asiatic toad / Chusan Island toad | 108 mg |
| Amphibian | Bufo bufo | Common toad / European toad | 114 mg |
| Amphibian | Bufo gargarizans | Asiatic toad / Chusan Island toad | 128 mg |
| Amphibian | Bufo tibetanus | Tibetan toad | 57 mg |
| Amphibian | Bufotes viridis | European green toad | 140 mg |
| Bird | Bulweria bulwerii | Bulwer’s petrel | 1.39 g |
| Bird | Burhinus capensis | Spotted thick-knee / Spotted dikkop / Cape thick-knee | 3.8 g |
| Bird | Burhinus grallarius | Bush stone-curlew / Bush thick-knee | 4.47 g |
| Bird | Burhinus oedicnemus | Eurasian stone-curlew / Eurasian thick-knee / Stone-curlew | 3.61 g |
| Mammal | Burramys parvus | Mountain pygmy possum | 1.02 g |
| Bird | Busarellus nigricollis | Black-collared hawk | 9.07 g |
| Bird | Butastur liventer | Rufous-winged buzzard | 5 g |
| Bird | Butastur teesa | White-eyed buzzard | 4.9 g |
| Bird | Buteo auguralis | Red-necked buzzard / African red-tailed buzzard | 7 g |
| Bird | Buteo buteo | Common buzzard | 7.95 g |
| Bird | Buteo galapagoensis | Galápagos hawk | 8.6 g |
| Bird | Buteo jamaicensis | Red-tailed hawk | 9.84 g |
| Bird | Buteo lagopus | Rough-legged buzzard / Rough-legged hawk | 9.03 g |
| Bird | Buteo lineatus | Red-shouldered hawk | 7.45 g |
| Bird | Buteo platypterus | Broad-winged hawk | 5.3 g |
| Bird | Buteo regalis | Ferruginous hawk / Ferruginous rough-leg | 9.84 g |
| Bird | Buteo rufinus | Long-legged buzzard | 9.5 g |
| Bird | Buteo rufofuscus | Jackal buzzard | 9.5 g |
| Bird | Buteo swainsoni | Swainson’s hawk / Grasshopper hawk / Locust hawk | 7.62 g |
| Bird | Buteogallus anthracinus | Common black hawk | 7.43 g |
| Bird | Buteogallus coronatus | Chaco eagle / Crowned solitary eagle / Crowned eagle | 4.6 g |
| Bird | Buteogallus meridionalis | Savanna hawk | 8.12 g |
| Bird | Buteogallus schistaceus | Slate-colored hawk | 7 g |
| Bird | Buteogallus urubitinga | Great black hawk | 10.5 g |
| Fish | Butis amboinensis | Olive flathead-gudgeon | 40.6 mg |
| Fish | Butis butis | Crazy fish / Upside-down sleeper / Crimson-tipped gudgeon / Duckbill sleeper | 69.2 mg |
| Bird | Butorides striata | Striated heron / Mangrove heron / Little green heron | 2.48 g |
| Bird | Bycanistes bucinator | Trumpeter hornbill | 6.89 g |
| Bird | Bycanistes cylindricus | Brown-cheeked hornbill | 10.5 g |
| Bird | Bycanistes fistulator | Piping hornbill | 8.3 g |
| Bird | Bycanistes subcylindricus | Black-and-white-casqued hornbill / Grey-cheeked hornbill | 12.2 g |
| Fish | Bythaelurus dawsoni | New Zealand catshark | 838 mg |
| Mammal | Cabassous unicinctus | Southern naked-tailed armadillo | 23.7 g |
| Mammal | Cacajao calvus | Bald uakari / Bald-headed uakari | 74.5 g |
| Mammal | Cacajao melanocephalus | Golden-backed uakari / Black-headed uakari | 67.9 g |
| Bird | Cacatua alba | White cockatoo / Umbrella cockatoo | 14.7 g |
| Bird | Cacatua ducorpsii | Solomons corella / Solomons cockatoo / Ducorps’s cockatoo / Broad-crested corella | 9.01 g |
| Bird | Cacatua galerita | Sulphur-crested cockatoo | 13.7 g |
| Bird | Cacatua haematuropygia | Red-vented cockatoo / Philippine cockatoo / Kalangay / Abukay | 8.81 g |
| Bird | Cacatua leadbeateri | Pink cockatoo / Major Mitchell’s cockatoo / Leadbeater’s cockatoo | 8.77 g |
| Bird | Cacatua moluccensis | Salmon-crested cockatoo / Moluccan cockatoo | 13.2 g |
| Bird | Cacatua ophthalmica | Blue-eyed cockatoo | 15.5 g |
| Bird | Cacatua pastinator | Western corella / Western long-billed corella | 11.4 g |
| Bird | Cacatua sanguinea | Little corella / Short-billed corella / Bare-eyed cockatoo / Blood-stained cockatoo | 9.23 g |
| Bird | Cacatua sulphurea | Yellow-crested cockatoo / Lesser sulphur-crested cockatoo | 9.68 g |
| Bird | Cacatua tenuirostris | Long-billed corella / Long-billed cockatoo / Slender-billed corella | 11 g |
| Bird | Cacicus cela | Yellow-rumped cacique | 2.52 g |
| Bird | Cacomantis castaneiventris | Chestnut-breasted cuckoo | 984 mg |
| Bird | Cacomantis flabelliformis | Fan-tailed cuckoo | 1.11 g |
| Bird | Cacomantis merulinus | Plaintive cuckoo | 990 mg |
| Bird | Cacomantis sonneratii | Banded bay cuckoo / Bay-banded cuckoo | 940 mg |
| Bird | Cacomantis variolosus | Sahul brush cuckoo | 994 mg |
| Mammal | Caenolestes fuliginosus | Dusky caenolestid / Tate’s shrew opossum | 667 mg |
| Fish | Caesio caerulaurea | Blue and gold fusilier / Blue fusilier / Gold-band fusilier / Scissor-tailed fusilier | 698 mg |
| Fish | Caesio cuning | Redbelly yellowtail fusilier / Yellowtail fusilier / Red-bellied fusilier / Robust fusilier | 611 mg |
| Fish | Caffrogobius caffer | – | 109 mg |
| Fish | Caffrogobius gilchristi | Prison goby | 60.7 mg |
| Fish | Caffrogobius saldanha | Commafin goby | 64.1 mg |
| Reptile | Caiman crocodilus | Spectacled caiman / Common caiman / White caiman / Speckled caiman | 5.85 g |
| Bird | Cairina moschata | Muscovy duck | 7.61 g |
| Bird | Calamanthus campestris | Rufous fieldwren | 663 mg |
| Bird | Calamanthus fuliginosus | Striated fieldwren | 725 mg |
| Bird | Calamospiza melanocorys | Lark bunting | 1.22 g |
| Bird | Calandrella cinerea | Red-capped lark | 694 mg |
| Bird | Calcarius lapponicus | Lapland longspur / Lapland bunting | 934 mg |
| Bird | Calidris acuminata | Sharp-tailed sandpiper | 1.03 g |
| Bird | Calidris alba | Sanderling | 980 mg |
| Bird | Calidris alpina | Dunlin | 940 mg |
| Bird | Calidris bairdii | Baird’s sandpiper | 754 mg |
| Bird | Calidris canutus | Red knot / Knot | 1.33 g |
| Bird | Calidris falcinellus | Broad-billed sandpiper | 743 mg |
| Bird | Calidris ferruginea | Curlew sandpiper | 1.02 g |
| Bird | Calidris fuscicollis | White-rumped sandpiper | 808 mg |
| Bird | Calidris himantopus | Stilt sandpiper | 953 mg |
| Bird | Calidris maritima | Purple sandpiper | 1.09 g |
| Bird | Calidris mauri | Western sandpiper | 660 mg |
| Bird | Calidris melanotos | Pectoral sandpiper / Pec | 1.09 g |
| Bird | Calidris minuta | Little stint | 575 mg |
| Bird | Calidris minutilla | Least sandpiper | 530 mg |
| Bird | Calidris ptilocnemis | Rock sandpiper | 1.17 g |
| Bird | Calidris pugnax | Ruff | 1.66 g |
| Bird | Calidris pusilla | Semipalmated sandpiper | 528 mg |
| Bird | Calidris ruficollis | Red-necked stint / Rufous-necked stint | 684 mg |
| Bird | Calidris subminuta | Long-toed stint | 611 mg |
| Bird | Calidris subruficollis | Buff-breasted sandpiper | 1.07 g |
| Bird | Calidris tenuirostris | Great knot | 1.6 g |
| Bird | Caligavis chrysops | Yellow-faced honeyeater | 748 mg |
| Mammal | Callimico goeldii | Goeldi’s marmoset / Goeldi’s monkey | 11.3 g |
| Fish | Callionymus grossi | Gross’s stinkfish | 68 mg |
| Fish | Callionymus lyra | Common dragonet | 119 mg |
| Fish | Callionymus maculatus | Spotted dragonet | 49 mg |
| Fish | Callionymus sublaevis | Australian filamentous dragonet | 67 mg |
| Insect | Calliopsis andreniformis | Eastern miner bee | 0.365 mg |
| Bird | Callipepla californica | California quail / California valley quail / Valley quail | 1.34 g |
| Bird | Callipepla gambelii | Gambel’s quail | 1.26 g |
| Bird | Callipepla squamata | Scaled quail / Blue quail / Cottontop | 1.5 g |
| Mammal | Callithrix aurita | Buffy-tufted marmoset / Buffy tufted-ear marmoset / White-eared marmoset | 7.2 g |
| Mammal | Callithrix geoffroyi | White-headed marmoset / Tufted-ear marmoset / Geoffroy’s marmoset / Geoffrey’s marmoset | 16.1 g |
| Mammal | Callithrix jacchus | Common marmoset / White-tufted marmoset / White-tufted-ear marmoset | 7.77 g |
| Mammal | Callithrix penicillata | Black-tufted marmoset | 7.43 g |
| Bird | Callocephalon fimbriatum | Gang-gang cockatoo | 7.75 g |
| Fish | Callochromis melanostigma | – | 45 mg |
| Fish | Callochromis pleurospilus | – | 63.6 mg |
| Fish | Callogobius sclateri | Pacific flap-headed goby | 18.1 mg |
| Bird | Callonetta leucophrys | Ringed teal | 3.1 g |
| Reptile | Callopistes maculatus | Dwarf tegu / Chilean dwarf tegu / Spotted false monitor / Chilean iguana | 318 mg |
| Fish | Callorhinchus milii | Australian ghostshark / Elephant shark / Makorepe / Whitefish | 3.12 g |
| Mammal | Callorhinus ursinus | Northern fur seal | 329 g |
| Mammal | Callosciurus caniceps | Grey-bellied squirrel | 6.02 g |
| Mammal | Callosciurus nigrovittatus | Black-striped squirrel | 4.44 g |
| Mammal | Callosciurus notatus | Plantain squirrel / Oriental squirrel / Tricoloured squirrel | 4.91 g |
| Mammal | Callosciurus prevostii | Prevost’s squirrel / Asian tri-coloured squirrel | 6.52 g |
| Mammal | Callospermophilus lateralis | Golden-mantled ground squirrel | 3.18 g |
| Mammal | Callospermophilus madrensis | Sierra Madre ground squirrel | 2.72 g |
| Mammal | Callospermophilus saturatus | Cascade golden-mantled ground squirrel | 3.38 g |
| Bird | Caloenas nicobarica | Nicobar pigeon / Nicobar dove | 3.04 g |
| Bird | Calonectris diomedea | Scopoli’s shearwater | 5.1 g |
| Bird | Calonectris leucomelas | Streaked shearwater | 4.04 g |
| Bird | Caloramphus fuliginosus | Brown barbet | 1.14 g |
| Reptile | Calotes versicolor | Oriental garden lizard / Common garden lizard / Eastern garden lizard / Indian garden lizard | 97 mg |
| Fish | Calotomus spinidens | Spinytooth parrotfish | 307 mg |
| Amphibian | Calotriton arnoldi | Montseny brook newt | 25.2 mg |
| Amphibian | Calotriton asper | Pyrenean brook salamander / Pyrenean newt | 25.3 mg |
| Mammal | Caluromys derbianus | Derby’s woolly opossum / Central American woolly opossum | 3.46 g |
| Mammal | Caluromys lanatus | Brown-eared woolly opossum / Western woolly opossum | 3.61 g |
| Mammal | Caluromys philander | Bare-tailed woolly opossum | 3.56 g |
| Bird | Calyptorhynchus banksii | Red-tailed black cockatoo / Banksian black cockatoo / Banks’ black cockatoo | 11.3 g |
| Bird | Calyptorhynchus lathami | Glossy black cockatoo | 10.1 g |
| Mammal | Camelus bactrianus | Bactrian camel / Mongolian camel / Domestic Bactrian camel / Two-humped camel | 576 g |
| Mammal | Camelus dromedarius | Dromedary / Dromedary camel / Arabian camel / One-humped camel | 658 g |
| Bird | Campephaga phoenicea | Red-shouldered cuckooshrike | 1.09 g |
| Bird | Campephilus guatemalensis | Pale-billed woodpecker | 6.15 g |
| Insect | Camponotus festinatus | – | 0.221 mg |
| Insect | Camponotus sericeiventris | Shimmering golden sugar ant | 0.44 mg |
| Insect | Camponotus vicinus | Bicolored carpenter ant | 0.326 mg |
| Dinosaur | Camptonotus dispar | Camptosaurus | 23 g |
| Bird | Camptostoma obsoletum | Southern beardless tyrannulet | 371 mg |
| Fish | Campylomormyrus numenius | – | 440 mg |
| Fish | Campylomormyrus phantasticus | – | 969 mg |
| Fish | Campylomormyrus tamandua | Blunt-jawed elephantnose / Wormjawed mormyrid | 252 mg |
| Bird | Campylopterus falcatus | Lazuline sabrewing | 304 mg |
| Bird | Campylopterus largipennis | Grey-breasted sabrewing | 321 mg |
| Bird | Campylorhamphus pusillus | Brown-billed scythebill | 1.39 g |
| Bird | Campylorhynchus brunneicapillus | Cactus wren | 1.39 g |
| Bird | Campylorhynchus griseus | Bicolored wren | 1.36 g |
| Bird | Canachites canadensis | Spruce grouse / Canada grouse / Spruce hen / Fool hen | 2.53 g |
| Mammal | Canis aureus | Golden jackal / Common jackal | 69.6 g |
| Mammal | Canis familiaris | Dog / Domestic dog | 90.1 g |
| Mammal | Canis latrans | Coyote / American jackal / Prairie wolf / Brush wolf | 83.6 g |
| Mammal | Canis lupus | Wolf / Grey wolf / Gray wolf | 113 g |
| Fish | Cantherhines dumerilii | Whitespotted filefish / Barred filefish / Orange-fin file / Yelloweye leatherjacket | 588 mg |
| Fish | Cantherhines pardalis | Honeycomb filefish / Honeycomb leatherjacket / Wire-netting filefish | 357 mg |
| Fish | Cantherhines pullus | Orangespotted filefish | 242 mg |
| Fish | Cantherhines verecundus | Shy filefish | 199 mg |
| Fish | Canthigaster coronata | Crowned toby | 112 mg |
| Fish | Canthigaster epilampra | Lantern toby | 106 mg |
| Fish | Canthigaster jactator | Hawaiian whitespotted toby | 82 mg |
| Fish | Canthigaster margaritata | Pearl toby | 68 mg |
| Fish | Canthigaster pygmaea | Pygmy toby | 24 mg |
| Fish | Canthigaster rostrata | Caribbean sharp-nose puffer | 46 mg |
| Fish | Canthigaster solandri | Spotted sharpnose puffer | 58 mg |
| Fish | Canthigaster valentini | Valentin’s sharpnose puffer / Saddled puffer / Black saddled toby | 52 mg |
| Bird | Cantorchilus nigricapillus | Bay wren | 1.1 g |
| Bird | Capito niger | Black-spotted barbet | 1.4 g |
| Mammal | Capra aegagrus | Wild goat | 108 g |
| Mammal | Capra hircus | Goat / Domestic goat | 104 g |
| Mammal | Capreolus capreolus | Roe deer / Roe / Western roe deer / European roe | 92.3 g |
| Mammal | Capricornis crispus | Japanese serow | 400 mg |
| Bird | Caprimulgus europaeus | European nightjar / Common goatsucker / Eurasian nightjar / Nightjar | 793 mg |
| Bird | Caprimulgus macrurus | Large-tailed nightjar | 1.05 g |
| Bird | Caprimulgus vexillarius | Pennant-winged nightjar | 951 mg |
| Mammal | Capromys pilorides | Desmarest’s hutia / Cuban hutia | 4.5 g |
| Fish | Capros aper | Capros / Boarfish / Zulu fish | 240 mg |
| Mammal | Caracal aurata | African golden cat | 58 g |
| Mammal | Caracal caracal | Caracal / Desert lynx / Persian lynx | 53.5 g |
| Fish | Caracanthus maculatus | Spotted coral croucher | 24 mg |
| Bird | Caracara plancus | Crested caracara / Mexican eagle | 9.51 g |
| Fish | Carangoides chrysophrys | Longnose trevally / Tea-leaf trevally / Club-nosed trevally / Grunting trevally | 580 mg |
| Fish | Carangoides fulvoguttatus | Yellowspotted trevally / Yellowspotted kingfish / Goldspotted trevally / Turrum | 2.93 g |
| Fish | Caranx bartholomaei | Yellow jack / Coolihoo | 6.14 g |
| Fish | Caranx hippos | Crevalle jack / Common jack / Black-tailed trevally / Couvalli jack | 2.97 g |
| Fish | Caranx ignobilis | Giant trevally / Lowly trevally / Barrier trevally / Giant kingfish | 1.91 g |
| Fish | Caranx lugubris | Black jack / Black trevally / Black kingfish / Coal fish | 4.65 g |
| Fish | Caranx melampygus | Bluefin trevally / Bluefin jack / Bluefin kingfish / Bluefinned crevalle | 2.67 g |
| Fish | Caranx sexfasciatus | Bigeye trevally / Bigeye jack / Great trevally / Six-banded trevally | 1.75 g |
| Fish | Carapus mourlani | Star pearlfish | 9.3 mg |
| Fish | Carassius auratus | Goldfish | 90 mg |
| Fish | Carassius carassius | Crucian carp | 470 mg |
| Fish | Carcharhinus acronotus | Blacknose shark | 8.35 g |
| Fish | Carcharhinus albimarginatus | Silvertip shark | 24.8 g |
| Fish | Carcharhinus amblyrhynchos | Grey reef shark / Gray reef shark | 35.3 g |
| Fish | Carcharhinus brachyurus | Copper shark / Bronze whaler / Narrowtooth shark | 9.14 g |
| Fish | Carcharhinus dussumieri | Whitecheek shark / Widemouth blackspot shark | 5.52 g |
| Fish | Carcharhinus falciformis | Silky shark / Blackspot shark / Gray whaler shark / Olive shark | 51.5 g |
| Fish | Carcharhinus isodon | Finetooth shark | 18.8 g |
| Fish | Carcharhinus leucas | Bull shark / Zambezi shark | 48.3 g |
| Fish | Carcharhinus limbatus | Blacktip shark | 14.5 g |
| Fish | Carcharhinus longimanus | Oceanic whitetip shark | 35.4 g |
| Fish | Carcharhinus melanopterus | Blacktip reef shark | 17.9 g |
| Fish | Carcharhinus obscurus | Dusky shark | 20.8 g |
| Fish | Carcharhinus plumbeus | Sandbar shark / Brown shark / Thickskin shark | 21.9 g |
| Fish | Carcharhinus sorrah | Spot-tail shark / Sorrah shark | 4.69 g |
| Fish | Carcharhinus tilstoni | Australian blacktip shark | 6.65 g |
| Fish | Carcharias taurus | Sand tiger shark / Spotted ragged-tooth shark / Blue-nurse sand tiger | 37 g |
| Fish | Carcharodon carcharias | Great white shark / White shark / White pointer / Great white | 33.1 g |
| Bird | Cardellina rubrifrons | Red-faced warbler | 448 mg |
| Bird | Cardinalis cardinalis | Northern cardinal / Common cardinal / Red cardinal | 1.29 g |
| Mammal | Cardioderma cor | Heart-nosed bat | 673 mg |
| Bird | Carduelis carduelis | European goldfinch / Goldfinch | 609 mg |
| Fish | Careproctus reinhardti | Sea tadpole | 81 mg |
| Reptile | Caretta caretta | Loggerhead sea turtle / Loggerhead turtle / Loggerhead | 2.7 g |
| Reptile | Carettochelys insculpta | Pig-nosed turtle / Fly River turtle / Pitted-shelled turtle / Warrajan | 2.7 g |
| Bird | Cariama cristata | Red-legged seriema / Crested cariama / Crested seriema | 11.6 g |
| Amphibian | Carichyla bicolor | Northern dwarf tree frog | 22.4 mg |
| Reptile | Carlia amax | Bauxite rainbow-skink | 17 mg |
| Reptile | Carlia bicarinata | Rainbow-skink | 18.8 mg |
| Mammal | Carlito syrichta | Philippine tarsier | 3.49 g |
| Mammal | Carollia castanea | Chestnut short-tailed bat | 449 mg |
| Mammal | Carollia perspicillata | Seba’s short-tailed bat | 508 mg |
| Bird | Carpodacus roseus | Pallas’s rosefinch | 995 mg |
| Bird | Carterornis leucotis | White-eared monarch / White-eared flycatcher | 539 mg |
| Bird | Caryothraustes poliogaster | Black-faced grosbeak | 1.48 g |
| Mammal | Casinycteris argynnis | Short-palated fruit bat | 892 mg |
| Fish | Caspiomyzon wagneri | Caspian lamprey | 25.9 mg |
| Mammal | Cassistrellus dimissus | Surat helmeted bat | 231 mg |
| Mammal | Castor canadensis | North American beaver | 38.1 g |
| Mammal | Castor fiber | Eurasian beaver / European beaver | 45 g |
| Bird | Casuarius bennetti | Dwarf cassowary / Bennett’s cassowary / Little cassowary / Mountain cassowary | 24.5 g |
| Bird | Casuarius casuarius | Southern cassowary / Double-wattled cassowary / Australian cassowary / Two-wattled cassowary | 34.6 g |
| Bird | Cathartes aura | Turkey vulture | 9.74 g |
| Bird | Catharus fuscescens | Veery / Wilson’s thrush / Tawny thrush | 952 mg |
| Bird | Catharus guttatus | Hermit thrush | 822 mg |
| Bird | Catharus minimus | Gray-cheeked thrush | 815 mg |
| Bird | Catharus ustulatus | Swainson’s thrush / Olive-backed thrush / Russet-backed thrush / Salmonberry bird | 825 mg |
| Mammal | Catopuma temminckii | Asian golden cat | 68 g |
| Mammal | Cavia aperea | Brazilian guinea pig | 4.19 g |
| Mammal | Cavia porcellus | Guinea pig / Domestic guinea pig / Cavy / Domestic cavy | 4.26 g |
| Mammal | Cebuella pygmaea | Western pygmy marmoset | 4.54 g |
| Mammal | Cebus albifrons | Humboldt’s white-fronted capuchin | 65.8 g |
| Mammal | Cebus capucinus | Colombian white-faced capuchin / Colombian white-headed capuchin / Colombian white-throated capuchin | 70.2 g |
| Mammal | Cebus olivaceus | Wedge-capped capuchin / Guianan weeper capuchin | 71.1 g |
| Bird | Cecropis senegalensis | Mosque swallow | 515 mg |
| Bird | Celeus castaneus | Chestnut-colored woodpecker | 2.19 g |
| Fish | Centroberyx gerrardi | Bight redfish | 819 mg |
| Bird | Centrocercus urophasianus | Greater sage-grouse / Sagehen | 4.14 g |
| Reptile | Centrochelys sulcata | African spurred tortoise / Sulcata tortoise | 865 mg |
| Fish | Centrolabrus exoletus | Rock cook | 186 mg |
| Fish | Centrolabrus melanocercus | Black-tailed wrasse | 75 mg |
| Fish | Centrolophus niger | Black ruff / Rudderfish / Blackfish | 372 mg |
| Fish | Centrophorus granulosus | Gulper shark | 3.16 g |
| Fish | Centrophorus harrissoni | Dumb gulper shark / Dumb shark / Harrison’s deep-sea dogfish / Harrison’s dogfish | 3.5 g |
| Fish | Centrophorus moluccensis | Smallfin gulper shark / Endeavour dogfish | 3.4 g |
| Fish | Centrophorus squamosus | Leafscale gulper shark | 4.45 g |
| Fish | Centropogon australis | Eastern fortescue / Fortesque / Southern fortescue / Fortie | 35 mg |
| Bird | Centropus bengalensis | Lesser coucal | 2.35 g |
| Bird | Centropus goliath | Goliath coucal | 5.74 g |
| Bird | Centropus menbeki | Ivory-billed coucal / Greater black coucal | 7.17 g |
| Bird | Centropus milo | Buff-headed coucal | 9.69 g |
| Bird | Centropus phasianinus | Pheasant coucal | 4.25 g |
| Bird | Centropus senegalensis | Senegal coucal | 2.7 g |
| Bird | Centropus sinensis | Greater coucal / Crow pheasant | 4.66 g |
| Bird | Centropus superciliosus | White-browed coucal / Lark-heeled cuckoo | 3.11 g |
| Bird | Centropus toulou | Malagasy coucal / Madagascar coucal | 3.36 g |
| Bird | Centropus viridis | Philippine coucal | 2.75 g |
| Fish | Centropyge bicolor | Bicolor angelfish / Pacific rock beauty / Oriole angelfish / Oriole dwarf angel | 142 mg |
| Fish | Centropyge bispinosa | Twospined angelfish / Dusky angelfish / Coral beauty | 126 mg |
| Fish | Centropyge fisheri | Orange angelfish / Whitetail angelfish / Damsel angelfish / Yellowtail angelfish | 89.7 mg |
| Fish | Centropyge flavissima | Lemonpeel angelfish / Yellow angelfish | 163 mg |
| Fish | Centropyge heraldi | Yellow angelfish / Herald’s angelfish | 143 mg |
| Fish | Centropyge multispinis | Bluefin dwarf / Brown pygmy angelfish / Dusky angelfish / Dusky cherub | 154 mg |
| Fish | Centropyge potteri | Russet angelfish / Potter’s angelfish / Potter’s pygmy angelfish | 143 mg |
| Fish | Centropyge tibicen | Keyhole angelfish / Black angelfish / Whitespot angelfish / Puller angelfish | 155 mg |
| Fish | Centroscymnus coelolepis | Portuguese dogfish / Portuguese shark | 5.48 g |
| Fish | Centroscymnus owstonii | Roughskin dogfish | 3.33 g |
| Fish | Centroselachus crepidater | Longnose velvet dogfish | 2.83 g |
| Mammal | Cephalopachus bancanus | Horsfield’s tarsier / Western tarsier | 2.99 g |
| Fish | Cephalopholis argus | Peacock hind / Roi / Bluespotted grouper / Celestial grouper | 712 mg |
| Fish | Cephalopholis boenak | Chocolate hind / Brownbarred rockcod / Brown-banded cod / Brown-banded rockcod | 198 mg |
| Fish | Cephalopholis cruentata | Graysby | 400 mg |
| Fish | Cephalopholis fulva | Coney / Butterfish | 381 mg |
| Fish | Cephalopholis hemistiktos | Yellowfin hind | 190 mg |
| Fish | Cephalopholis leopardus | Leopard grouper / Leopard hind | 155 mg |
| Fish | Cephalopholis miniata | Coral grouper / Coral hind / Coral rock cod / Coral cod | 453 mg |
| Fish | Cephalopholis urodeta | Darkfin hind / Flagtail rockcod / Chevron rockcod / Duskyfin hind | 343 mg |
| Mammal | Cephalophus dorsalis | Bay duiker / Black-striped duiker / Black-backed duiker | 92.9 g |
| Mammal | Cephalophus leucogaster | White-bellied duiker | 93 g |
| Mammal | Cephalophus natalensis | Red forest duiker / Natal duiker / Natal red duiker | 84.1 g |
| Mammal | Cephalophus nigrifrons | Black-fronted duiker | 85 g |
| Mammal | Cephalophus silvicultor | Yellow-backed duiker | 170 g |
| Mammal | Cephalophus zebra | Zebra duiker / Banded duiker / Striped-back duiker | 83 g |
| Mammal | Cephalorhynchus commersonii | Commerson’s dolphin / Jacobita / Skunk dolphin / Piebald dolphin | 716 g |
| Mammal | Cephalorhynchus heavisidii | Heaviside’s dolphin | 763 g |
| Mammal | Cephalorhynchus hectori | Hector’s dolphin | 644 g |
| Fish | Cephaloscyllium albipinnum | Whitefin swellshark | 1.06 g |
| Fish | Cephaloscyllium isabellum | Draughtsboard shark | 1.58 g |
| Fish | Cephaloscyllium laticeps | Australian swellshark | 570 mg |
| Insect | Cephalotes atratus | – | 0.417 mg |
| Insect | Cephalotes umbraculatus | – | 0.16 mg |
| Insect | Cephalotes varians | Turtle ant | 0.028 mg |
| Fish | Cepola macrophthalma | Red bandfish | 93.5 mg |
| Bird | Cepphus columba | Pigeon guillemot | 4.04 g |
| Bird | Cepphus grylle | Black guillemot / Tystie | 3.44 g |
| Reptile | Cerastes cerastes | Saharan horned viper / Desert horned viper | 85.9 mg |
| Reptile | Cerastes vipera | Sahara sand viper / Avicenna viper | 76 mg |
| Insect | Ceratina calcarata | Spurred ceratina | 0.474 mg |
| Insect | Ceratina strenua | Nimble ceratina | 0.153 mg |
| Bird | Ceratogymna atrata | Black-casqued hornbill / Black-casqued wattled hornbill | 14.7 g |
| Bird | Ceratogymna elata | Yellow-casqued hornbill / Yellow-casqued wattled hornbill | 14.8 g |
| Bird | Ceratopipra erythrocephala | Golden-headed manakin | 509 mg |
| Bird | Ceratopipra mentalis | Red-capped manakin | 611 mg |
| Fish | Ceratoscopelus warmingii | Warming’s lantern fish | 28.2 mg |
| Mammal | Ceratotherium simum | White rhinoceros / White rhino / Square-lipped rhinoceros | 643 g |
| Mammal | Cercartetus caudatus | Long-tailed pygmy possum | 723 mg |
| Mammal | Cercartetus concinnus | Western pygmy possum / Southwestern pygmy possum / Mundarda | 305 mg |
| Mammal | Cercartetus lepidus | Tasmanian pygmy possum / Little pygmy possum / Tiny pygmy possum | 366 mg |
| Mammal | Cercartetus nanus | Eastern pygmy possum | 438 mg |
| Mammal | Cercocebus agilis | Agile mangabey | 107 g |
| Mammal | Cercocebus atys | Sooty mangabey | 101 g |
| Mammal | Cercocebus galeritus | Tana River mangabey | 101 g |
| Mammal | Cercocebus torquatus | Collared mangabey | 120 g |
| Bird | Cercomacroides nigrescens | Red-capped mangabey / White-collared mangabey | 870 mg |
| Bird | Cercomacroides tyrannina | Dusky antbird / Tyrannine antbird | 768 mg |
| Mammal | Cercopithecus ascanius | Red-tailed monkey / Black-cheeked white-nosed monkey / Red-tailed guenon / Redtail monkey | 62.6 g |
| Mammal | Cercopithecus campbelli | Campbell’s mona monkey / Campbell’s guenon / Campbell’s monkey | 56.9 g |
| Mammal | Cercopithecus cephus | Moustached guenon / Moustached monkey | 66.7 g |
| Mammal | Cercopithecus diana | Diana monkey | 60.9 g |
| Mammal | Cercopithecus erythrotis | Red-eared guenon / Red-eared monkey / Russet-eared guenon | 65.4 g |
| Mammal | Cercopithecus hamlyni | Hamlyn’s monkey / Owl-faced monkey | 69.1 g |
| Mammal | Cercopithecus lowei | Lowe’s mona monkey | 51.2 g |
| Mammal | Cercopithecus mitis | Blue monkey / Diademed monkey | 68.7 g |
| Mammal | Cercopithecus mona | Mona monkey | 65.8 g |
| Mammal | Cercopithecus neglectus | De Brazza’s monkey | 64.8 g |
| Mammal | Cercopithecus nictitans | Greater spot-nosed monkey / Putty-nosed monkey | 72.4 g |
| Mammal | Cercopithecus petaurista | Lesser spot-nosed monkey / Lesser spot-nosed guenon / Lesser white-nosed guenon / Lesser white-nosed monkey | 55.9 g |
| Mammal | Cercopithecus pogonias | Crested mona monkey / Crowned guenon / Crowned monkey / Golden-bellied guenon | 60.8 g |
| Mammal | Cercopithecus wolfi | Wolf’s mona monkey / Wolf’s guenon | 61.5 g |
| Mammal | Cerdocyon thous | Crab-eating fox / Forest dog / Wood fox / Bushfox | 45.7 g |
| Bird | Cereopsis novaehollandiae | Cape Barren goose / Pig goose | 9.08 g |
| Bird | Cerorhinca monocerata | Rhinoceros auklet / Rhino auklet / Horn-billed puffin / Unicorn puffin | 4.8 g |
| Bird | Certhia brachydactyla | Short-toed treecreeper | 530 mg |
| Bird | Certhia familiaris | Eurasian treecreeper / Common treecreeper | 495 mg |
| Bird | Certhiaxis cinnamomeus | Yellow-chinned spinetail | 712 mg |
| Bird | Certhionyx variegatus | Pied honeyeater / Black and white honeyeater / Western pied honeyeater | 870 mg |
| Mammal | Cervus canadensis | Elk / Wapiti | 409 g |
| Mammal | Cervus elaphus | Red deer | 371 g |
| Mammal | Cervus nippon | Sika deer / Northern spotted deer / Japanese deer | 210 g |
| Bird | Ceryle rudis | Pied kingfisher | 1.67 g |
| Fish | Cetorhinus maximus | Basking shark | 20.7 g |
| Fish | Cetoscarus bicolor | Bicolour parrotfish | 860 mg |
| Bird | Ceuthmochares aereus | Blue malkoha / Chattering yellowbill | 1.38 g |
| Bird | Ceuthmochares australis | Green malkoha / Whistling yellowbill | 1.53 g |
| Bird | Ceyx azureus | Azure kingfisher | 1.02 g |
| Bird | Ceyx lepidus | Moluccan dwarf kingfisher / Variable dwarf kingfisher | 580 mg |
| Fish | Chaenogobius gulosus | – | 59.5 mg |
| Mammal | Chaeropus ecaudatus | Southern pig-footed bandicoot | 2.44 g |
| Mammal | Chaetodipus baileyi | Bailey’s pocket mouse | 701 mg |
| Mammal | Chaetodipus californicus | California pocket mouse | 621 mg |
| Mammal | Chaetodipus fallax | San Diego pocket mouse | 533 mg |
| Mammal | Chaetodipus formosus | Long-tailed pocket mouse | 480 mg |
| Mammal | Chaetodipus hispidus | Hispid pocket mouse | 685 mg |
| Mammal | Chaetodipus penicillatus | Desert pocket mouse | 462 mg |
| Mammal | Chaetodipus spinatus | Spiny pocket mouse | 478 mg |
| Fish | Chaetodon auriga | Threadfin butterflyfish | 428 mg |
| Fish | Chaetodon austriacus | Blacktail butterflyfish / Black-tailed butterflyfish / Exquisite butterflyfish | 283 mg |
| Fish | Chaetodon baronessa | Eastern triangle butterflyfish / Baroness butterflyfish | 213 mg |
| Fish | Chaetodon bennetti | Bluelashed butterflyfish / Eclipse butterflyfish / Archer butterflyfish / Bennett’s butterflyfish | 270 mg |
| Fish | Chaetodon capistratus | Foureye butterflyfish / Four-eyed butterflyfish | 188 mg |
| Fish | Chaetodon citrinellus | Speckled butterflyfish / Citron butterflyfish | 257 mg |
| Fish | Chaetodon collare | Red-tailed butterflyfish / Brown butterflyfish / Pakistani butterflyfish / Redtail butterflyfish | 370 mg |
| Fish | Chaetodon decussatus | Indian vagabond butterflyfish / Blackened butterflyfish / Black-finned vagabond | 312 mg |
| Fish | Chaetodon dolosus | African butterflyfish | 313 mg |
| Fish | Chaetodon ephippium | Saddle butterflyfish | 397 mg |
| Fish | Chaetodon fasciatus | Diagonal butterflyfish / Red Sea raccoon butterflyfish | 409 mg |
| Fish | Chaetodon flavirostris | Black Butterflyfish / Dusky butterflyfish | 484 mg |
| Fish | Chaetodon kleinii | Sunburst butterflyfish / Black-lipped butterflyfish / Blacklip butterflyfish / Klein’s butterflyfish | 192 mg |
| Fish | Chaetodon lunula | Raccoon butterflyfish / Crescent-masked butterflyfish / Lunule butterflyfish / Halfmoon butterflyfish | 515 mg |
| Fish | Chaetodon melannotus | Black-backed butterflyfish / Blackback butterflyfish | 249 mg |
| Fish | Chaetodon mertensii | Atoll butterflyfish / Yellowback butterflyfish / Merten’s butterflyfish | 207 mg |
| Fish | Chaetodon miliaris | Millet butterflyfish / Lemon butterflyfish / Millet-seed butterflyfish | 288 mg |
| Fish | Chaetodon multicinctus | Pebbled butterflyfish | 196 mg |
| Fish | Chaetodon ocellatus | Spotfin butterflyfish | 372 mg |
| Fish | Chaetodon ornatissimus | Ornate butterflyfish / Clown butterflyfish | 493 mg |
| Fish | Chaetodon paucifasciatus | Eritrean butterflyfish / Crown butterflyfish | 242 mg |
| Fish | Chaetodon plebeius | Blueblotch butterflyfish / Bluespot butterflyfish / Bluedash butterflyfish / Grey-blotched butterflyfish | 221 mg |
| Fish | Chaetodon quadrimaculatus | Four-spotted butterflyfish / Fourspot butterflyfish | 259 mg |
| Fish | Chaetodon reticulatus | Mailed butterflyfish / Reticulated butterflyfish / Black butterflyfish | 378 mg |
| Fish | Chaetodon speculum | Mirror butterflyfish / Oval-spot butterflyfish | 202 mg |
| Fish | Chaetodon striatus | Banded butterflyfish / Banded butterflyfish / Butterbun / Butterflyfish | 347 mg |
| Fish | Chaetodon trifascialis | Chevron butterflyfish / Chevroned butterflyfish / Triangulate butterflyfish / V-lined butterflyfish | 342 mg |
| Fish | Chaetodon trifasciatus | Melon butterflyfish / Indian redfin butterflyfish | 255 mg |
| Fish | Chaetodon ulietensis | Pacific double-saddle butterflyfish / False falcula butterflyfish | 283 mg |
| Fish | Chaetodon unimaculatus | Teardrop butterflyfish | 222 mg |
| Mammal | Chaetophractus villosus | Big hairy armadillo | 16.4 g |
| Bird | Chaetura pelagica | Chimney swift | 477 mg |
| Reptile | Chalarodon madagascariensis | Madagascar iguana | 60.5 mg |
| Reptile | Chalcides bedriagai | Bedriaga’s skink | 26.1 mg |
| Reptile | Chalcides chalcides | Italian three-toed skink / Cylindrical skink | 55.3 mg |
| Reptile | Chalcides mionecton | Mionecton skink / Morocco cylindrical skink | 30 mg |
| Reptile | Chalcides ocellatus | Ocellated skink / Eyed skink / Gongilo | 73 mg |
| Reptile | Chalcides polylepis | Many-scaled cylindrical skink | 37 mg |
| Bird | Chalcites basalis | Horsfield’s bronze cuckoo | 638 mg |
| Bird | Chalcites lucidus | Shining bronze cuckoo | 701 mg |
| Bird | Chalcites minutillus | Little bronze cuckoo | 595 mg |
| Bird | Chalcites osculans | Black-eared cuckoo | 761 mg |
| Bird | Chalcomitra fuliginosa | Carmelite sunbird | 430 mg |
| Bird | Chalcophaps indica | Common emerald dove / Asian emerald dove / Grey-capped emerald dove / Green dove | 998 mg |
| Bird | Chalcophaps stephani | Stephan’s emerald dove / Stephan’s dove | 1.12 g |
| Bird | Chalcopsitta atra | Black lory | 5.75 g |
| Bird | Chalcopsitta cardinalis | Cardinal lory | 5.44 g |
| Bird | Chalcopsitta fuscata | Dusky lory / White-rumped lory / Dusky-orange lory | 4.28 g |
| Fish | Chalinochromis brichardi | – | 63.5 mg |
| Mammal | Chalinolobus gouldii | – | 240 mg |
| Mammal | Chalinolobus morio | Chocolate wattled bat | 185 mg |
| Insect | Chalybion californicum | Common blue mud dauber | 4.38 mg |
| Bird | Chamaea fasciata | Wrentit | 799 mg |
| Reptile | Chamaeleo calyptratus | Veiled chameleon / Cone-head chameleon / Yemen chameleon / Yemeni chameleon | 238 mg |
| Bird | Chamaeza campanisona | Short-tailed antthrush | 1.9 g |
| Fish | Champsocephalus gunnari | Mackerel icefish | 246 mg |
| Fish | Channa orientalis | Ceylon snakehead | 285 mg |
| Fish | Channichthys rhinoceratus | Unicorn icefish | 389 mg |
| Bird | Charadrius hiaticula | Common ringed plover / Great ringed plover / Ringed plover | 1.2 g |
| Bird | Charadrius melodus | Piping plover | 1.01 g |
| Bird | Charadrius semipalmatus | Semipalmated plover | 995 mg |
| Bird | Charadrius tricollaris | Three-banded plover / Three-banded sandplover | 787 mg |
| Bird | Charadrius vociferus | Killdeer | 1.14 g |
| Bird | Charmosyna papou | West Papuan lorikeet | 3.57 g |
| Bird | Charmosynopsis pulchella | Fairy lorikeet / Little red lorikeet / Little red lory | 1.44 g |
| Insect | Charterginus fulvus | – | 0.167 mg |
| Fish | Chauliodus sloani | Sloane’s viperfish | 34.1 mg |
| Bird | Chauna chavaria | Northern screamer | 8.82 g |
| Bird | Chauna torquata | Southern screamer | 7.33 g |
| Fish | Cheilinus chlorourus | Floral wrasse | 402 mg |
| Fish | Cheilinus trilobatus | Tripletail wrasse | 522 mg |
| Fish | Cheilio inermis | Cigar wrasse | 372 mg |
| Fish | Cheilodipterus arabicus | Tiger cardinal | 187 mg |
| Fish | Cheilodipterus lachneri | Aqaba Cardinalfish | 123 mg |
| Fish | Cheilodipterus macrodon | Large-toothed cardinalfish / Tiger cardinalfish | 108 mg |
| Fish | Cheilodipterus novemstriatus | Indian Ocean twospot cardinalfish | 41 mg |
| Fish | Cheilodipterus quinquelineatus | Five-lined cardinalfish | 348 mg |
| Mammal | Cheirogaleus major | Greater dwarf lemur / Geoffroy’s dwarf lemur | 6.24 g |
| Mammal | Cheirogaleus medius | Fat-tailed dwarf lemur / Lesser dwarf lemur / Western fat-tailed dwarf lemur / Spiny forest dwarf lemur | 3.13 g |
| Mammal | Cheirogaleus sibreei | Sibree’s dwarf lemur | 4.4 g |
| Mammal | Cheiromeles torquatus | Hairless bat / Naked bulldog bat / Greater naked bat | 1.37 g |
| Fish | Chelidonichthys cuculus | Red gurnard / East Atlantic red gurnard / East Atlantic red soldier | 816 mg |
| Fish | Chelidonichthys kumu | Bluefin gurnard / Pacific red gurnard / Pūwahaiau | 72 mg |
| Fish | Chelidonichthys lastoviza | Streaked gurnard / African gurnard / Rock gurnard | 406 mg |
| Fish | Chelidonichthys lucerna | Tub gurnard / Sapphirine gurnard / Tube-fish / Tubfish | 494 mg |
| Bird | Chelidoptera tenebrosa | Swallow-winged puffbird / Swallow-wing | 881 mg |
| Reptile | Chelodina oblonga | Oblong turtle / Narrow-breasted snake-necked turtle / Southwestern snake-necked turtle / Western long-necked turtle | 920 mg |
| Fish | Chelon auratus | Golden grey mullet | 327 mg |
| Fish | Chelon labrosus | Thicklip grey mullet | 1.72 g |
| Reptile | Chelonia mydas | Green sea turtle / Green turtle / Black sea turtle / Pacific green turtle | 7.69 g |
| Insect | Chelostoma philadelphi | – | 0.253 mg |
| Reptile | Chelus fimbriata | Mata mata / Mata-mata / Matamata / Amazon mata mata | 884 mg |
| Reptile | Chelydra serpentina | Common snapping turtle | 952 mg |
| Bird | Chenonetta jubata | Australian wood duck / Maned duck / Maned goose | 4.13 g |
| Mammal | Cheracebus lugens | Black titi monkey / Widow monkey | 19 g |
| Mammal | Cheracebus medemi | Colombian black-handed titi monkey | 19.4 g |
| Mammal | Cheracebus regulus | Red-headed titi monkey | 23 g |
| Mammal | Cheracebus torquatus | Collared titi monkey | 19.1 g |
| Bird | Cheramoeca leucosterna | White-backed swallow | 425 mg |
| Bird | Chersomanes albofasciata | Spike-heeled lark | 974 mg |
| Reptile | Chilabothrus striatus | Hispaniolan boa | 359 mg |
| Fish | Chiloscyllium punctatum | Brownbanded bamboo shark | 2.13 g |
| Fish | Chimaera lignaria | Carpenter’s chimaera / Giant chimaera / Giant purple chimaera | 7.24 g |
| Fish | Chimaera monstrosa | Rabbit fish / Rat fish | 3.27 g |
| Mammal | Chinchilla lanigera | Long-tailed chinchilla / Common chinchilla / Chilean chinchilla / Coastal chinchilla | 6.02 g |
| Bird | Chionis albus | Snowy sheathbill / Greater sheathbill / Pale-faced sheathbill / Paddy | 4.11 g |
| Bird | Chionis minor | Black-faced sheathbill / Lesser sheathbill / Paddy bird | 3.57 g |
| Bird | Chionomesa fimbriata | Glittering-throated emerald | 239 mg |
| Amphibian | Chirixalus doriae | Doria’s Asian treefrog / Doria’s bush frog / Doria’s tree frog | 19.6 mg |
| Fish | Chirocentrus dorab | Dorab wolf-herring | 664 mg |
| Mammal | Chiroderma salvini | Salvin’s big-eyed bat | 787 mg |
| Mammal | Chiroderma trinitatum | Little big-eyed bat | 537 mg |
| Mammal | Chiroderma villosum | Hairy big-eyed bat | 706 mg |
| Amphibian | Chiromantis xerampelina | Grey foam-nest tree frog / Southern foam-nest tree frog | 75.8 mg |
| Mammal | Chironax melanocephalus | Black-capped fruit bat | 612 mg |
| Mammal | Chironectes minimus | Water opossum / Yapok | 4.72 g |
| Mammal | Chiropodomys gliroides | Indomalayan pencil-tailed tree mouse / Pencil-tailed tree mouse | 700 mg |
| Mammal | Chiropotes chiropotes | Red-backed bearded saki | 57 g |
| Mammal | Chiropotes israelita | Brown-backed bearded saki | 55.1 g |
| Mammal | Chiropotes satanas | Black bearded saki | 49.2 g |
| Bird | Chiroxiphia caudata | Blue manakin / Swallow-tailed manakin | 829 mg |
| Bird | Chiroxiphia linearis | Long-tailed manakin | 702 mg |
| Fish | Chitala chitala | Indian featherback / Indian knifefish | 190 mg |
| Fish | Chitala ornata | Clown featherback / Clown knifefish / Spotted knifefish | 179 mg |
| Bird | Chlamydera maculata | Spotted bowerbird | 3.86 g |
| Bird | Chlamydera nuchalis | Great bowerbird | 4.1 g |
| Reptile | Chlamydosaurus kingii | Frilled lizard / Frilled agama / Frillneck lizard / Frill-necked lizard | 475 mg |
| Fish | Chlamydoselachus anguineus | Frilled shark / Lizard shark | 3.39 g |
| Bird | Chlamydotis undulata | African houbara / Houbara bustard | 5.5 g |
| Bird | Chlidonias hybrida | Whiskered tern | 1.53 g |
| Bird | Chlidonias leucopterus | White-winged tern / White-winged black tern | 1.4 g |
| Bird | Chloebia gouldiae | Gouldian finch / Gould’s finch / Rainbow finch | 550 mg |
| Bird | Chloephaga hybrida | Kelp goose | 7.88 g |
| Bird | Chloephaga melanoptera | Andean goose | 7.7 g |
| Bird | Chloephaga picta | Upland goose / Magellan goose | 6.53 g |
| Bird | Chloephaga poliocephala | Ashy-headed goose | 6.01 g |
| Insect | Chloridea virescens | Tobacco budworm | 0.153 mg |
| Bird | Chloris ambigua | Black-headed greenfinch | 660 mg |
| Bird | Chloris chloris | European greenfinch / Greenfinch | 885 mg |
| Mammal | Chlorocebus aethiops | Grivet | 62 g |
| Mammal | Chlorocebus cynosuros | Malbrouck | 70.3 g |
| Mammal | Chlorocebus pygerythrus | Vervet monkey / Vervet | 61 g |
| Mammal | Chlorocebus sabaeus | Green monkey / Sabaeus monkey | 70 g |
| Bird | Chloroceryle amazona | Amazon kingfisher | 2.02 g |
| Bird | Chloroceryle americana | Green kingfisher | 1.03 g |
| Bird | Chlorophonia cyanea | Blue-naped chlorophonia | 631 mg |
| Bird | Chloropsis hardwickii | Orange-bellied leafbird | 760 mg |
| Bird | Chloropsis palawanensis | Yellow-throated leafbird | 1.09 g |
| Bird | Chlorospingus flavopectus | Common chlorospingus / Common bush tanager | 1.02 g |
| Bird | Chlorospingus pileatus | Sooty-capped chlorospingus / Sooty-capped bush tanager | 1.15 g |
| Bird | Chlorothraupis carmioli | Carmiol’s tanager | 1.35 g |
| Fish | Chlorurus frontalis | Pacific slopehead parrotfish | 421 mg |
| Fish | Chlorurus gibbus | Heavybeak parrotfish / Gibbus parrotfish / Red Sea steephead parrotfish | 918 mg |
| Fish | Chlorurus perspicillatus | Spectacled parrotfish | 560 mg |
| Fish | Chlorurus sordidus | Daisy parrotfish / Bullethead parrotfish | 526 mg |
| Fish | Choerodon graphicus | Graphic tuskfish | 658 mg |
| Mammal | Choeroniscus godmani | Godman’s long-tailed bat | 340 mg |
| Mammal | Choeroniscus minor | Lesser long-tongued bat / Lesser long-tailed bat | 389 mg |
| Mammal | Choeropsis liberiensis | Pygmy hippopotamus / Pygmy hippo | 238 g |
| Mammal | Choloepus didactylus | Linnaeus’s two-toed sloth / Southern two-toed sloth / Unau / Linne’s two-toed sloth | 23.9 g |
| Mammal | Choloepus hoffmanni | Hoffmann’s two-toed sloth / Northern two-toed sloth | 24.9 g |
| Reptile | Chondrodactylus bibronii | Bibron’s thick-toed gecko / Bibron’s sand gecko / Bibron’s gecko | 123 mg |
| Reptile | Chondrodactylus turneri | Turner’s thick-toed gecko | 95 mg |
| Bird | Chondrohierax uncinatus | Hook-billed kite | 4.18 g |
| Bird | Chordeiles minor | Common nighthawk / Bullbat | 881 mg |
| Bird | Chordeiles nacunda | Nacunda nighthawk | 1.34 g |
| Reptile | Christinus marmoratus | Marbled gecko / Southern marbled gecko | 30.9 mg |
| Bird | Chroicocephalus hartlaubii | Hartlaub’s gull / Hartlaub’s seagull | 3.18 g |
| Bird | Chroicocephalus maculipennis | Brown-hooded gull / Brown-hooded seagull | 3.37 g |
| Bird | Chroicocephalus novaehollandiae | Silver gull / Silver seagull | 3.19 g |
| Bird | Chroicocephalus philadelphia | Bonaparte’s gull / Bonaparte’s seagull | 2.46 g |
| Bird | Chroicocephalus ridibundus | Black-headed gull / Black-headed seagull | 2.93 g |
| Fish | Chromis agilis | Agile chromis | 85.2 mg |
| Fish | Chromis atripectoralis | Black-axil chromis / Blackfin chromis / Blue-green puller | 138 mg |
| Fish | Chromis axillaris | Grey chromis | 104 mg |
| Fish | Chromis chromis | Damselfish / Mediterranean chromis | 140 mg |
| Fish | Chromis chrysura | Stout chromis | 157 mg |
| Fish | Chromis flavomaculata | Yellowspotted chromis | 215 mg |
| Fish | Chromis multilineata | Brown chromis | 180 mg |
| Fish | Chromis ternatensis | Ternate chromis | 100 mg |
| Fish | Chromis verater | Threespot chromis | 342 mg |
| Fish | Chromis viridis | Green chromis / Blue-green chromis | 53 mg |
| Fish | Chromis weberi | Weber’s chromis | 163 mg |
| Mammal | Chrotopterus auritus | Big-eared woolly bat / Peters’s woolly false vampire bat | 1.74 g |
| Reptile | Chrysemys picta | Painted turtle | 373 mg |
| Fish | Chrysiptera biocellata | Twinspot damselfish / Twospot demoiselle | 73 mg |
| Fish | Chrysiptera brownriggii | Surge damselfish | 51 mg |
| Fish | Chrysiptera glauca | Grey demoiselle / Grey damselfish | 69 mg |
| Fish | Chrysiptera rollandi | Rolland’s demoiselle | 33 mg |
| Fish | Chrysiptera starcki | Starck’s demoiselle / Starck’s damselfish | 28 mg |
| Mammal | Chrysochloris asiatica | Cape golden mole | 649 mg |
| Bird | Chrysochloris stuhlmanni | Stuhlmann’s golden mole | 951 mg |
| Bird | Chrysococcyx caprius | Diederik cuckoo / Dideric cuckoo / Didric cuckoo | 804 mg |
| Bird | Chrysococcyx klaas | Klaas’s cuckoo | 610 mg |
| Bird | Chrysocolaptes lucidus | Buff-spotted flameback | 4.92 g |
| Mammal | Chrysocyon brachyurus | Maned wolf | 120 g |
| Bird | Chrysolampis mosquitus | Ruby-topaz hummingbird / Ruby topaz | 185 mg |
| Bird | Chrysolophus amherstiae | Lady Amherst’s pheasant / Chinese copper pheasant | 3.9 g |
| Bird | Chrysolophus pictus | Golden pheasant / Chinese pheasant / Rainbow pheasant | 3.27 g |
| Bird | Chrysomus ruficapillus | Chestnut-capped blackbird | 810 mg |
| Bird | Chunga burmeisteri | Black-legged seriema | 7.5 g |
| Bird | Cicinnurus regius | King bird-of-paradise | 1.8 g |
| Bird | Ciconia abdimii | Abdim’s stork / White-bellied stork | 7.8 g |
| Bird | Ciconia boyciana | Oriental stork | 20.9 g |
| Bird | Ciconia ciconia | White stork | 15.5 g |
| Bird | Ciconia episcopus | Asian woolly-necked stork / Asian woollyneck | 10.8 g |
| Bird | Ciconia maguari | Maguari stork | 20.5 g |
| Bird | Ciconia nigra | Black stork | 11.8 g |
| Fish | Ciliata mustela | Fivebeard rockling | 88.4 mg |
| Fish | Ciliata septentrionalis | Northern rockling | 46.9 mg |
| Bird | Cinclodes albidiventris | Chestnut-winged cinclodes | 912 mg |
| Bird | Cinclodes albiventris | Cream-winged cinclodes | 912 mg |
| Bird | Cinclodes fuscus | Buff-winged cinclodes | 921 mg |
| Bird | Cinclodes patagonicus | Dark-bellied cinclodes | 1.28 g |
| Bird | Cincloramphus cruralis | Brown songlark / Australian songlark | 1.16 g |
| Bird | Cincloramphus mathewsi | Rufous songlark | 931 mg |
| Bird | Cinclosoma cinnamomeum | Cinnamon quail-thrush | 1.52 g |
| Bird | Cinclosoma punctatum | Spotted quail-thrush | 2.19 g |
| Bird | Cinclus cinclus | White-throated dipper / European dipper / Dipper | 1.39 g |
| Bird | Cinclus mexicanus | American dipper / Water ouzel | 1.45 g |
| Bird | Cinnyricinclus leucogaster | Violet-backed starling / Plum-coloured starling / Amethyst starling / Ndambamukula | 1.22 g |
| Bird | Cinnyris coccinigastrus | Splendid sunbird | 550 mg |
| Bird | Cinnyris jugularis | Garden sunbird / Olive-backed sunbird | 412 mg |
| Bird | Cinnyris pulchellus | Beautiful sunbird | 350 mg |
| Bird | Cinnyris venustus | Variable sunbird / Yellow-bellied sunbird | 310 mg |
| Bird | Circaetus cinereus | Brown snake eagle | 14.5 g |
| Bird | Circaetus fasciolatus | Southern banded snake eagle / East African snake eagle / Fasciated snake eagle | 9.5 g |
| Bird | Circaetus gallicus | Short-toed snake eagle / Short-toed eagle | 13.5 g |
| Bird | Circus aeruginosus | Western marsh harrier / Eurasian marsh harrier | 5.78 g |
| Bird | Circus approximans | Swamp harrier / Australasian marsh harrier / Australasian harrier | 5.68 g |
| Bird | Circus cyaneus | Hen harrier | 4.78 g |
| Fish | Cirrhigaleus australis | Southern Mandarin dogfish | 4.98 g |
| Fish | Cirrhilabrus temminckii | Thread-fin fairy-wrasse / Threadfin wrasse | 95 mg |
| Fish | Cirrhitichthys falco | Dwarf hawkfish | 52 mg |
| Fish | Cirrhitichthys oxycephalus | Coral hawkfish / Pixy hawkfish / Sharp-headed hawkfish | 39 mg |
| Fish | Cirrhitops fasciatus | Redbarred hawkfish | 98 mg |
| Fish | Cirrhitus pinnulatus | Stocky hawkfish / Whitespotted hawkfish / Marbled hawkfish | 237 mg |
| Fish | Cirripectes fuscoguttatus | Spotted blenny | 66.8 mg |
| Fish | Cirripectes polyzona | Barred blenny | 51.5 mg |
| Fish | Cirripectes stigmaticus | Red-streaked blenny | 56 mg |
| Bird | Cissa chinensis | Common green magpie | 3.63 g |
| Bird | Cissomela pectoralis | Banded honeyeater | 443 mg |
| Bird | Cissopis leverianus | Magpie tanager | 1.77 g |
| Bird | Cisticola cherina | Madagascar cisticola | 448 mg |
| Bird | Cisticola exilis | Golden-headed cisticola / Bright-capped cisticola | 404 mg |
| Bird | Cisticola fulvicapilla | Neddicky / Piping cisticola | 529 mg |
| Bird | Cistothorus palustris | Marsh wren / Long-billed marsh wren | 539 mg |
| Mammal | Civettictis civetta | African civet | 37 g |
| Bird | Cladorhynchus leucocephalus | Banded stilt | 1.67 g |
| Bird | Clamator coromandus | Chestnut-winged cuckoo / Red-winged crested cuckoo | 1.49 g |
| Bird | Clamator glandarius | Great spotted cuckoo | 1.9 g |
| Bird | Clamator jacobinus | Jacobin cuckoo / Pied cuckoo / Pied crested cuckoo | 1.31 g |
| Bird | Clamator levaillantii | Levaillant’s cuckoo | 1.89 g |
| Bird | Clanga clanga | Greater spotted eagle / Spotted eagle | 11.8 g |
| Bird | Clanga pomarina | Lesser spotted eagle | 11.3 g |
| Bird | Clangula hyemalis | Long-tailed duck | 4.99 g |
| Bird | Claravis pretiosa | Blue ground dove | 932 mg |
| Reptile | Clemmys guttata | Spotted turtle | 1.36 g |
| Mammal | Clethrionomys gapperi | Southern red-backed vole / Gapper’s red-backed vole | 560 mg |
| Mammal | Clethrionomys glareolus | Bank vole | 515 mg |
| Mammal | Clethrionomys rutilus | Northern red-backed vole | 560 mg |
| Bird | Climacteris erythrops | Red-browed treecreeper | 912 mg |
| Bird | Climacteris melanurus | Black-tailed treecreeper | 891 mg |
| Bird | Climacteris picumnus | Brown treecreeper | 1.04 g |
| Bird | Climacteris rufus | Rufous treecreeper | 1.07 g |
| Fish | Clupea harengus | Atlantic herring | 400 mg |
| Mammal | Clyomys laticeps | Broad-headed spiny rat | 3.52 g |
| Bird | Clytorhynchus pachycephaloides | Southern shrikebill / Brown flycatcher | 1.09 g |
| Bird | Cnemophilus loriae | Loria’s satinbird / Velvet satinbird / Loria’s bird-of-paradise | 2.23 g |
| Bird | Cnemotriccus fuscatus | Fuscous flycatcher | 478 mg |
| Mammal | Cnephaeus serotinus | Serotine bat / Common serotine bat / Big brown bat / Silky bat | 319 mg |
| Bird | Coccothraustes coccothraustes | Hawfinch | 1.6 g |
| Bird | Coccycua minuta | Little cuckoo | 1.06 g |
| Bird | Coccyzus americanus | Yellow-billed cuckoo / Rain crow / Storm crow | 1.21 g |
| Bird | Coccyzus erythropthalmus | Black-billed cuckoo | 1.06 g |
| Bird | Coccyzus lansbergi | Grey-capped cuckoo | 1.12 g |
| Bird | Coccyzus longirostris | Hispaniolan lizard cuckoo | 1.96 g |
| Bird | Coccyzus melacoryphus | Dark-billed cuckoo | 1.15 g |
| Bird | Coccyzus merlini | Great lizard cuckoo | 2.5 g |
| Bird | Coccyzus minor | Mangrove cuckoo | 1.37 g |
| Bird | Coccyzus pluvialis | Chestnut-bellied cuckoo | 2.79 g |
| Bird | Coccyzus rufigularis | Bay-breasted cuckoo | 2.62 g |
| Bird | Coccyzus vetula | Jamaican lizard cuckoo | 2.07 g |
| Bird | Cochlearius cochlearius | Boat-billed heron / Boatbill | 6.07 g |
| Fish | Cocotropus monacanthus | Roughskin scorpionfish | 85 mg |
| Bird | Coeligena lutetiae | Buff-winged starfrontlet | 327 mg |
| Fish | Coelorinchus caelorhincus | Hollowsnout grenadier / Blackspot grenadier | 426 mg |
| Mammal | Coendou prehensilis | Brazilian porcupine | 16.7 g |
| Mammal | Coendou rothschildi | Andean porcupine | 20.9 g |
| Mammal | Coendou vestitus | Brown hairy dwarf porcupine | 11.7 g |
| Bird | Coereba flaveola | Bananaquit | 458 mg |
| Bird | Colaptes auratus | Northern flicker / Common flicker / Yellowhammer / Clape | 2.94 g |
| Reptile | Coleonyx brevis | Texas banded gecko | 23.8 mg |
| Reptile | Coleonyx elegans | Yucatán banded gecko | 115 mg |
| Reptile | Coleonyx mitratus | Central American banded gecko | 76.2 mg |
| Reptile | Coleonyx variegatus | Western banded gecko | 41.1 mg |
| Mammal | Coleura afra | African sheath-tailed bat | 259 mg |
| Bird | Colibri coruscans | Sparkling violetear | 227 mg |
| Bird | Colinus virginianus | Northern bobwhite / Virginia quail / Bobwhite quail | 1.22 g |
| Bird | Colius striatus | Speckled mousebird | 1.18 g |
| Insect | Colletes compactus | Aster cellophane bee | 1.96 mg |
| Insect | Colletes simulans | Spine-shouldered cellophane bee | 1.84 mg |
| Insect | Colletes thoracicus | Rufous-chested cellophane bee | 1.52 mg |
| Bird | Collocalia esculenta | Glossy swiftlet | 207 mg |
| Bird | Colluricincla harmonica | Grey shrikethrush / Grey shrike-thrush / Grey thrush | 2.07 g |
| Bird | Colluricincla megarhyncha | Little shrikethrush / Little shrike-thrush | 1.39 g |
| Mammal | Colobus angolensis | Angola colobus / Angolan black-and-white colobus / Angolan colobus | 73 g |
| Mammal | Colobus guereza | Mantled guereza / Guereza / Eastern black-and-white colobus / Abyssinian black-and-white colobus | 78.6 g |
| Mammal | Colobus polykomos | King colobus / Western black-and-white colobus | 73.3 g |
| Mammal | Colobus satanas | Black colobus / Satanic black colobus | 74.9 g |
| Mammal | Colobus vellerosus | Ursine colobus / White-thighed colobus / Geoffroy’s black-and-white colobus / White-thighed black-and-white colobus | 73.1 g |
| Bird | Coloeus dauuricus | Daurian jackdaw | 4.92 g |
| Bird | Coloeus monedula | Western jackdaw / Eurasian jackdaw / European jackdaw / Jackdaw | 4.74 g |
| Bird | Colonia colonus | Long-tailed tyrant | 759 mg |
| Reptile | Coluber constrictor | Eastern racer / North American racer | 287 mg |
| Bird | Columba arquatrix | African olive pigeon / Rameron pigeon | 2.33 g |
| Bird | Columba guinea | Speckled pigeon / African rock pigeon / Guinea pigeon | 2.2 g |
| Bird | Columba leucomela | White-headed pigeon | 2.37 g |
| Bird | Columba leuconota | Snow pigeon | 2.03 g |
| Bird | Columba livia | Rock dove / Common pigeon / Rock pigeon | 2.31 g |
| Bird | Columba oenas | Stock dove | 2.14 g |
| Bird | Columba palumbus | Common wood pigeon | 2.36 g |
| Bird | Columba vitiensis | Metallic pigeon / White-throated pigeon | 2.31 g |
| Bird | Columbina buckleyi | Ecuadorian ground dove | 787 mg |
| Bird | Columbina cruziana | Croaking ground dove | 530 mg |
| Bird | Columbina inca | Inca dove / Mexican dove | 756 mg |
| Bird | Columbina minuta | Plain-breasted ground dove | 580 mg |
| Bird | Columbina passerina | Common ground dove | 663 mg |
| Bird | Columbina picui | Picui ground dove / Picui dove | 777 mg |
| Bird | Columbina talpacoti | Ruddy ground dove | 748 mg |
| Fish | Compsaraia compsa | – | 127 mg |
| Fish | Concholabrus fasciatus | Red-breasted wrasse | 715 mg |
| Mammal | Condylura cristata | Star-nosed mole | 1.05 g |
| Mammal | Conepatus chinga | Molina’s hog-nosed skunk / Andes skunk | 16.6 g |
| Mammal | Conepatus humboldtii | Humboldt’s hog-nosed skunk / Patagonian hog-nosed skunk | 12.6 g |
| Mammal | Conepatus leuconotus | American hog-nosed skunk / Rooter skunk | 15.8 g |
| Fish | Conger cinereus | Longfin African Conger / Blacklip conger / Moustache conger / Ashen conger | 373 mg |
| Fish | Conger conger | European conger | 811 mg |
| Fish | Conger wilsoni | Cape conger | 253 mg |
| Mammal | Connochaetes gnou | Black wildebeest / White-tailed gnu | 361 g |
| Mammal | Connochaetes taurinus | Blue wildebeest / Common wildebeest / White-bearded gnu / Brindled gnu | 402 g |
| Bird | Conopophaga lineata | Rufous gnateater | 728 mg |
| Bird | Conopophila albogularis | Rufous-banded honeyeater | 561 mg |
| Bird | Conopophila rufogularis | Rufous-throated honeyeater | 458 mg |
| Bird | Contopus cooperi | Olive-sided flycatcher | 663 mg |
| Bird | Contopus latirostris | Lesser Antillean pewee | 392 mg |
| Bird | Contopus virens | Eastern wood pewee | 468 mg |
| Bird | Copsychus malabaricus | White-rumped shama | 900 mg |
| Bird | Copsychus saularis | Oriental magpie-robin | 1.14 g |
| Fish | Coptodon rendalli | Redbreast tilapia / Redbreast kurper | 163 mg |
| Bird | Coracias caudatus | Lilac-breasted roller / Fork-tailed roller / Lilac-throated roller / Mosilikatze’s roller | 2.13 g |
| Bird | Coracias garrulus | European roller | 2.3 g |
| Bird | Coracina caledonica | South Melanesian cuckooshrike | 3.1 g |
| Bird | Coracina maxima | Ground cuckoo-shrike | 2.28 g |
| Bird | Coracina novaehollandiae | Black-faced cuckooshrike | 2.49 g |
| Bird | Coracina papuensis | White-bellied cuckooshrike | 2.1 g |
| Bird | Coracopsis nigra | Lesser vasa parrot / Black parrot | 5.75 g |
| Bird | Coracopsis vasa | Greater vasa parrot | 8.99 g |
| Bird | Coragyps atratus | Black vulture / American black vulture / Mexican vulture / Zopilote | 10.8 g |
| Reptile | Corallus hortulana | Amazon tree boa / Common tree boa / Garden tree boa / Macabrel | 304 mg |
| Bird | Corcorax melanorhamphos | White-winged chough | 5.39 g |
| Reptile | Cordylus cordylus | Cape girdled lizard | 175 mg |
| Reptile | Cordylus tropidosternum | East African armadillo lizard / Dwarf sungazer / Tropical girdled lizard | 103 mg |
| Fish | Coregonus artedi | Cisco / Northern cisco / Lake herring / Chub | 300 mg |
| Fish | Coregonus clupeaformis | Lake whitefish | 592 mg |
| Fish | Coris aygula | Clown coris / Clown wrasse / False clownwrasse / Humphead wrasse | 623 mg |
| Fish | Coris flavovittata | Yellowstripe coris | 117 mg |
| Fish | Coris gaimard | Yellowtail wrasse / African coris | 160 mg |
| Fish | Coris julis | Mediterranean rainbow wrasse | 129 mg |
| Fish | Coris variegata | Dapple coris | 125 mg |
| Fish | Coris venusta | Elegant coris | 134 mg |
| Bird | Cormobates leucophaea | White-throated treecreeper | 830 mg |
| Mammal | Cormura brevirostris | Chestnut sac-winged bat / Wagner’s sac-winged bat | 219 mg |
| Reptile | Coronella austriaca | Smooth snake | 68.3 mg |
| Reptile | Coronella girondica | Southern smooth snake / Riccioli’s snake | 88 mg |
| Reptile | Correlophus ciliatus | Crested gecko / Eyelash gecko | 119 mg |
| Bird | Corthylio calendula | Ruby-crowned kinglet | 321 mg |
| Bird | Corvus albicollis | White-necked raven | 12 g |
| Bird | Corvus albus | Pied crow | 9.55 g |
| Bird | Corvus bennetti | Little crow | 7.29 g |
| Bird | Corvus brachyrhynchos | American crow | 8.39 g |
| Bird | Corvus capensis | Cape crow / Black crow | 8 g |
| Bird | Corvus corax | Common raven / Northern raven | 15.2 g |
| Bird | Corvus corone | Carrion crow | 8.18 g |
| Bird | Corvus coronoides | Australian raven | 10.2 g |
| Bird | Corvus crassirostris | Thick-billed raven | 14 g |
| Bird | Corvus cryptoleucus | Chihuahuan raven | 9.08 g |
| Bird | Corvus enca | Sunda crow | 6.6 g |
| Bird | Corvus frugilegus | Rook | 8.01 g |
| Bird | Corvus hawaiiensis | Hawaiian crow / ʻalalā | 9.9 g |
| Bird | Corvus imparatus | Tamaulipas crow | 4.4 g |
| Bird | Corvus jamaicensis | Jamaican crow | 7 g |
| Bird | Corvus leucognaphalus | White-necked crow | 8.7 g |
| Bird | Corvus macrorhynchos | Large-billed crow / Thick-billed crow / Jungle crow | 11.4 g |
| Bird | Corvus mellori | Little raven | 8.81 g |
| Bird | Corvus moneduloides | New Caledonian crow | 6.9 g |
| Bird | Corvus nasicus | Cuban crow | 5.9 g |
| Bird | Corvus orru | Torresian crow / Australian crow / Papuan crow | 8.85 g |
| Bird | Corvus ossifragus | Fish crow | 6.37 g |
| Bird | Corvus palmarum | Hispaniolan palm crow | 5.9 g |
| Bird | Corvus rhipidurus | Fan-tailed raven | 9.4 g |
| Bird | Corvus ruficollis | Brown-necked raven | 10.5 g |
| Bird | Corvus splendens | House crow / Indian / Greynecked / Ceylon | 5.7 g |
| Bird | Corvus torquatus | Collared crow / Ring-necked crow / White-collared crow | 8 g |
| Bird | Corvus tristis | Gray crow / Bare-faced crow | 10.3 g |
| Bird | Corvus validus | Long-billed crow | 8.7 g |
| Bird | Corydon sumatranus | Dusky broadbill | 2.49 g |
| Fish | Coryogalops ocheticus | Suez goby | 4.47 mg |
| Fish | Coryogalops william | Kaalpens goby | 17.6 mg |
| Fish | Coryphaena hippurus | Mahi-mahi / Common dolphinfish / Dorado | 3.64 g |
| Fish | Coryphaenoides rupestris | Rock grenadier / Roundnose grenadier / Roundhead rat-tail | 800 mg |
| Bird | Coryphistera alaudina | Lark-like brushrunner | 972 mg |
| Mammal | Coryphodon elephantopus | – | 90 g |
| Mammal | Coryphodon hamatus | – | 93 g |
| Bird | Coryphospingus cucullatus | Red pileated finch / Red-crested finch | 692 mg |
| Bird | Corythaeola cristata | Great blue turaco | 6.2 g |
| Fish | Corythoichthys flavofasciatus | Network pipefish / Reticulate pipefish / Yellow-banded pipefish | 6 mg |
| Fish | Corythoichthys haematopterus | Messmate pipefish / Dragonfaced pipefish / Bloodspot pipefish / Reef pipefish | 5.9 mg |
| Fish | Corythoichthys intestinalis | Scribbled pipefish / Banded pipefish / Australian banded pipefish / Australian messmate pipefish | 20 mg |
| Fish | Corythoichthys schultzi | Schultz’s pipefish | 5 mg |
| Bird | Corythornis cristatus | Malachite kingfisher | 450 mg |
| Reptile | Corytophanes cristatus | Smooth helmeted iguana / Helmeted iguana / Helmeted basilisk / Elegant helmeted lizard | 174 mg |
| Bird | Coscoroba coscoroba | Coscoroba swan | 9.24 g |
| Bird | Cotinga cotinga | Purple-breasted cotinga | 1.39 g |
| Fish | Cottunculus microps | Polar sculpin | 92 mg |
| Bird | Coturnicops noveboracensis | Yellow rail | 767 mg |
| Bird | Coturnix coturnix | Common quail / European quail | 854 mg |
| Bird | Coturnix pectoralis | Stubble quail / Grey quail / Pectoral quail | 995 mg |
| Bird | Coua caerulea | Blue coua | 3.84 g |
| Bird | Coua cristata | Crested coua | 2.38 g |
| Bird | Coua gigas | Giant coua | 4.75 g |
| Bird | Coua reynaudii | Red-fronted coua | 3.47 g |
| Bird | Coua ruficeps | Red-capped coua | 2.63 g |
| Bird | Coua serriana | Red-breasted coua | 4.15 g |
| Bird | Cracticus nigrogularis | Pied butcherbird | 3.13 g |
| Bird | Cracticus torquatus | Grey butcherbird | 2.88 g |
| Mammal | Craseomys rufocanus | Grey red-backed vole / Grey-sided vole | 608 mg |
| Mammal | Craseonycteris thonglongyai | Kitti’s hog-nosed bat / Bumblebee bat / Hog-nosed bat | 87 mg |
| Mammal | Cratogeomys fumosus | Smoky pocket gopher | 4.19 g |
| Bird | Crax alector | Black curassow / Smooth-billed curassow / Crested curassow | 7 g |
| Bird | Crax daubentoni | Yellow-knobbed curassow | 9.02 g |
| Bird | Crax fasciolata | Bare-faced curassow | 6.52 g |
| Bird | Crax rubra | Great curassow | 9.9 g |
| Bird | Creagrus furcatus | Swallow-tailed gull / Swallow-tailed seagull | 5.11 g |
| Mammal | Cremnomys cutchicus | Cutch rat / Cutch rock rat | 1.67 g |
| Fish | Crenimugil crenilabis | Fringelip mullet | 296 mg |
| Bird | Crex crex | Corn crake / Corncrake / Landrail | 1.27 g |
| Mammal | Cricetomys gambianus | Gambian pouched rat / African giant pouched rat | 6.59 g |
| Mammal | Cricetulus barabensis | Chinese striped hamster / Striped dwarf hamster | 656 mg |
| Mammal | Cricetus cricetus | European hamster / Common hamster / Eurasian hamster / Black-bellied hamster | 2.34 g |
| Bird | Crinifer concolor | Grey go-away-bird / Grey lourie / Grey loerie / Kwêvoël | 3.76 g |
| Bird | Crinifer piscator | Western plantain-eater / Grey plantain-eater / Western grey plantain-eater | 4.87 g |
| Bird | Crithagra burtoni | Thick-billed seedeater | 1.21 g |
| Bird | Crithagra flaviventris | Yellow canary | 748 mg |
| Mammal | Crocidura fuscomurina | Bicolored musk shrew | 130 mg |
| Mammal | Crocidura hildegardeae | Hildegarde’s shrew | 220 mg |
| Mammal | Crocidura jacksoni | Jackson’s shrew | 250 mg |
| Mammal | Crocidura niobe | Niobe’s shrew | 280 mg |
| Mammal | Crocidura olivieri | African giant shrew / Mann’s musk shrew / Euchareena’s musk shrew / Olivier’s shrew | 460 mg |
| Mammal | Crocidura orientalis | Oriental shrew | 440 mg |
| Mammal | Crocidura russula | Greater white-toothed shrew | 176 mg |
| Reptile | Crocodylus acutus | American crocodile | 15 g |
| Reptile | Crocodylus niloticus | Nile crocodile / African crocodile / Ethiopian crocodile / Common crocodile | 9.1 g |
| Mammal | Crocuta crocuta | Spotted hyena / Laughing hyena | 153 g |
| Mammal | Crossarchus obscurus | Common kusimanse / Long-nosed kusimanse / Kusimanse | 9.89 g |
| Bird | Crossoptilon auritum | Blue eared pheasant | 5.9 g |
| Bird | Crossoptilon crossoptilon | White eared pheasant / Dolan’s eared pheasant / Bee’s pheasant | 6.1 g |
| Reptile | Crotalus durissus | South American rattlesnake / Tropical rattlesnake | 169 mg |
| Reptile | Crotalus oreganus | Western rattlesnake / Northern Pacific rattlesnake | 261 mg |
| Reptile | Crotalus vegrandis | Uracoan Rattlesnake | 169 mg |
| Bird | Crotophaga ani | Smooth-billed ani | 1.62 g |
| Bird | Crotophaga major | Greater ani | 2.69 g |
| Bird | Crotophaga sulcirostris | Groove-billed ani | 1.56 g |
| Bird | Crypsirina temia | Racket-tailed treepie | 1.8 g |
| Reptile | Cryptoblepharus litoralis | Coastal snake-eyed skink / Supralittoral shinning-skink | 17 mg |
| Reptile | Cryptoblepharus plagiocephalus | Péron’s snake-eyed skink / Callose-palmed shinning-skink | 12.8 mg |
| Reptile | Cryptoblepharus virgatus | Striped snake-eyed skink / Cream-striped shinning-skink / Wall skink / Fence skink | 12.6 mg |
| Fish | Cryptocentroides gobioides | Crested oystergoby | 27.2 mg |
| Mammal | Cryptomys hottentotus | Common mole-rat / African mole-rat / Hottentot mole-rat | 844 mg |
| Mammal | Cryptoprocta ferox | Fossa | 33.3 g |
| Mammal | Cryptotis parva | North American least shrew | 120 mg |
| Bird | Crypturellus obsoletus | Brown tinamou | 3.3 g |
| Bird | Crypturellus soui | Little tinamou | 1.54 g |
| Bird | Crypturellus tataupa | Tataupa tinamou | 1.47 g |
| Fish | Ctenochaetus binotatus | Twospot bristletooth / Twospot surgeonfish | 244 mg |
| Fish | Ctenochaetus striatus | Striated surgeonfish / Lined bristletooth / Fine-lined bristletooth / Striped bristletooth | 334 mg |
| Fish | Ctenochaetus strigosus | Kole tang / Spotted bristletooth / Spotted surgeonfish / Goldring bristletooth | 259 mg |
| Fish | Ctenogobius chusanensis | – | 18.9 mg |
| Fish | Ctenogobius fasciatus | Blotchcheek goby | 15.2 mg |
| Fish | Ctenolabrus rupestris | Goldsinny wrasse | 122 mg |
| Reptile | Ctenophorus caudicinctus | Ring-tailed dragon / Ring-tailed bicycle-dragon | 106 mg |
| Reptile | Ctenophorus cristatus | Crested dragon / Bicycle dragon / Crested bicycle-dragon | 183 mg |
| Reptile | Ctenophorus decresii | Tawny dragon / Tawny crevice-dragon / Tawny rock dragon | 116 mg |
| Reptile | Ctenophorus fionni | Arcoona rock dragon / Peninsula crevice-dragon / Peninsula dragon | 98.8 mg |
| Reptile | Ctenophorus fordi | Mallee military dragon / Mallee dragon / Mallee sand-dragon | 45.6 mg |
| Reptile | Ctenophorus gibba | Bulldust ground-dragon / Gibber dragon | 103 mg |
| Reptile | Ctenophorus isolepis | Central military dragon / Military dragon / Military sand dragon | 65.9 mg |
| Reptile | Ctenophorus nuchalis | Central netted dragon / Central netted ground dragon | 155 mg |
| Reptile | Ctenophorus ornatus | Ornate crevice-dragon / Ornate dragon | 118 mg |
| Reptile | Ctenophorus pictus | Painted ground-dragon / Painted dragon | 82.3 mg |
| Reptile | Ctenophorus rufescens | Rusty dragon / Rusty-crevice dragon | 120 mg |
| Reptile | Ctenophorus salinarum | Claypan dragon / Saltpan ground-dragon | 83.2 mg |
| Reptile | Ctenophorus tjantjalka | Ochre dragon | 94.2 mg |
| Reptile | Ctenophorus vadnappa | Red-barred dragon / Red-barred crevice-dragon | 105 mg |
| Reptile | Ctenotus inornatus | Bar-shouldered ctenotus | 62.3 mg |
| Reptile | Ctenotus regius | Pale-rumped ctenotus / Regal striped skink | 41.9 mg |
| Reptile | Ctenotus robustus | Eastern striped skink | 83.6 mg |
| Bird | Cuculus canorus | Common cuckoo / European cuckoo / Eurasian cuckoo | 1.67 g |
| Bird | Cuculus clamosus | Black cuckoo | 1.54 g |
| Bird | Cuculus rochii | Madagascar cuckoo / Madagascan cuckoo / Madagascar lesser cuckoo | 1.01 g |
| Bird | Cuculus saturatus | Himalayan cuckoo / Oriental cuckoo | 1.62 g |
| Bird | Cuculus solitarius | Red-chested cuckoo | 1.59 g |
| Bird | Culicicapa helianthea | Citrine canary-flycatcher | 321 mg |
| Mammal | Cuniculus paca | Lowland paca / Spotted paca | 32.6 g |
| Mammal | Cuon alpinus | Dhole / Asian wild dog / Asiatic wild dog / Indian wild dog | 94.7 g |
| Reptile | Cuora amboinensis | Amboina box turtle / Southeast Asian box turtle | 702 mg |
| Spider | Cupiennius salei | Tiger bromeliad spider | 0.251 mg |
| Bird | Curaeus curaeus | Austral blackbird | 2.56 g |
| Bird | Curruca communis | Common whitethroat / Greater whitethroat | 537 mg |
| Bird | Curruca curruca | Lesser whitethroat | 509 mg |
| Bird | Curruca hortensis | Western Orphean warbler | 735 mg |
| Bird | Curruca melanocephala | Sardinian warbler | 524 mg |
| Bird | Curruca nisoria | Barred warbler | 710 mg |
| Bird | Cursorius cursor | Cream-coloured courser | 1.4 g |
| Bird | Cursorius temminckii | Temminck’s courser | 1.3 g |
| Bird | Cyanerpes cyaneus | Red-legged honeycreeper | 570 mg |
| Bird | Cyanistes caeruleus | Eurasian blue tit | 627 mg |
| Bird | Cyanistes cyanus | Azure tit | 660 mg |
| Bird | Cyanocitta cristata | Blue jay | 3.02 g |
| Bird | Cyanocitta stelleri | Steller’s jay | 3.58 g |
| Bird | Cyanocorax affinis | Black-chested jay | 4.11 g |
| Bird | Cyanocorax beecheii | Purplish-backed jay | 4.3 g |
| Bird | Cyanocorax caeruleus | Azure jay | 3.7 g |
| Bird | Cyanocorax cayanus | Cayenne jay | 4.2 g |
| Bird | Cyanocorax chrysops | Plush-crested jay | 3.5 g |
| Bird | Cyanocorax cyanomelas | Purplish jay | 3.8 g |
| Bird | Cyanocorax formosus | White-throated magpie-jay | 4.2 g |
| Bird | Cyanocorax melanocyaneus | Bushy-crested jay | 3.3 g |
| Bird | Cyanocorax morio | Brown jay | 4.98 g |
| Bird | Cyanocorax mystacalis | White-tailed jay | 3.2 g |
| Bird | Cyanocorax sanblasianus | San Blas jay | 3 g |
| Bird | Cyanocorax violaceus | Violaceous jay | 4.7 g |
| Bird | Cyanocorax yncas | Inca jay | 2.4 g |
| Bird | Cyanoliseus patagonus | Burrowing parrot / Burrowing parakeet / Patagonian conure | 8.53 g |
| Bird | Cyanolyca argentigula | Silvery-throated jay | 2.6 g |
| Bird | Cyanolyca viridicyanus | White-collared jay | 3.3 g |
| Bird | Cyanomitra olivacea | Olive sunbird | 477 mg |
| Bird | Cyanomitra verticalis | Green-headed sunbird | 520 mg |
| Bird | Cyanopica cyanus | Azure-winged magpie | 2.59 g |
| Bird | Cyanopsitta spixii | Spix’s macaw / Little blue macaw / Blue macaw | 7.51 g |
| Bird | Cyanoramphus auriceps | Yellow-crowned parakeet / Yellow-fronted parakeet | 2.88 g |
| Bird | Cyanoramphus novaezelandiae | Red-crowned parakeet / Red-fronted parakeet / Kākāriki | 2.33 g |
| Bird | Cyanoramphus unicolor | Antipodes parakeet / Antipodes Island parakeet | 4.18 g |
| Fish | Cyathopharynx furcifer | Featherfin cichlid | 164 mg |
| Bird | Cyclarhis gujanensis | Rufous-browed peppershrike | 1.31 g |
| Reptile | Cyclodomorphus casuarinae | Tasmanian she-oak skink / She-oak skink | 71.8 mg |
| Mammal | Cyclopes didactylus | Silky anteater / Pygmy anteater | 4.2 g |
| Bird | Cyclopsitta diophthalma | Double-eyed fig parrot / Blue-faced fig parrot / Red-faced fig parrot / Dwarf fig parrot | 1.76 g |
| Bird | Cyclopsitta edwardsii | Edwards’s fig parrot / Scarlet-cheeked fig parrot | 3.37 g |
| Fish | Cyclopterus lumpus | Lumpsucker / Lumpfish | 211 mg |
| Reptile | Cyclura nubila | Cuban rock iguana / Cuban ground iguana / Cuban iguana | 1.75 g |
| Bird | Cygnus atratus | Black swan | 12.5 g |
| Bird | Cygnus bewickii | Bewick’s swan / Tundra swan | 12.5 g |
| Bird | Cygnus buccinator | Trumpeter | 21 g |
| Bird | Cygnus columbianus | Whistling swan / Tundra swan | 17.7 g |
| Bird | Cygnus cygnus | Whooper swan / Common swan | 19.9 g |
| Bird | Cygnus melancoryphus | Black-necked swan | 10.7 g |
| Bird | Cygnus olor | Mute swan | 16.4 g |
| Reptile | Cylindrophis ruffus | Red-tailed pipe snake / Common pipe snake / Red cylinder snake | 65.7 mg |
| Bird | Cymbilaimus lineatus | Fasciated antshrike | 1.26 g |
| Bird | Cymbirhynchus macrorhynchos | Black-and-red broadbill | 1.5 g |
| Mammal | Cynictis penicillata | Yellow mongoose / Red meerkat | 10.5 g |
| Mammal | Cynocephalus volans | Philippine flying lemur / Philippine colugo / Kagwang | 130 g |
| Mammal | Cynogale bennettii | Otter civet | 30 g |
| Mammal | Cynohyaenodon cayluxi | – | 8.3 g |
| Mammal | Cynomops abrasus | Cinnamon dog-faced bat | 418 mg |
| Mammal | Cynomops greenhalli | Greenhall’s dog-faced bat | 300 mg |
| Mammal | Cynomops planirostris | Southern dog-faced bat | 185 mg |
| Mammal | Cynomys gunnisoni | Gunnison’s prairie dog | 5.27 g |
| Mammal | Cynomys leucurus | White-tailed prairie dog | 5.72 g |
| Mammal | Cynomys ludovicianus | Black-tailed prairie dog | 5.83 g |
| Mammal | Cynomys mexicanus | Mexican prairie dog | 5.53 g |
| Mammal | Cynomys parvidens | Utah prairie dog | 5.58 g |
| Amphibian | Cynops pyrrhogaster | Japanese fire-bellied newt / Japanese fire-bellied salamander | 18.6 mg |
| Mammal | Cynopterus brachyotis | Lesser short-nosed fruit bat | 937 mg |
| Mammal | Cynopterus horsfieldii | Horsfield’s fruit bat | 1.29 g |
| Mammal | Cynopterus sphinx | Greater short-nosed fruit bat / Short-nosed Indian fruit bat | 1.12 g |
| Bird | Cyornis rubeculoides | Blue-throated blue flycatcher | 570 mg |
| Insect | Cyphomyrmex cornutus | – | 0.029 mg |
| Insect | Cyphomyrmex longiscapus | – | 0.028 mg |
| Insect | Cyphomyrmex muelleri | – | 0.033 mg |
| Fish | Cyphomyrus psittacus | – | 235 mg |
| Bird | Cyphorhinus arada | Musician wren / Organ wren | 941 mg |
| Fish | Cyphotilapia frontosa | Front cichlid / Frontosa cichlid | 245 mg |
| Fish | Cyprichromis leptosoma | – | 100 mg |
| Fish | Cyprichromis microlepidotus | – | 127 mg |
| Fish | Cyprinus carpio | Common carp / European carp / Eurasian carp / Carp | 1.19 g |
| Bird | Cypsiurus parvus | African palm swift | 305 mg |
| Reptile | Cyrtodactylus irianjayaensis | Giant bent toed gecko | 190 mg |
| Bird | Cyrtonyx montezumae | Montezuma quail / Mearns’s quail / Harlequin quail / Fool quail | 1.51 g |
| Mammal | Cystophora cristata | Hooded seal / Bladdernose seal | 455 g |
| Mammal | Cyttarops alecto | Short-eared bat | 175 mg |
| Bird | Dacelo gaudichaud | Rufous-bellied kookaburra / Gaudichaud’s kookaburra | 2.23 g |
| Bird | Dacelo leachii | Blue-winged kookaburra | 4.38 g |
| Bird | Dacelo novaeguineae | Laughing kookaburra | 4.43 g |
| Bird | Dacnis cayana | Blue dacnis / Turquoise honeycreeper | 570 mg |
| Mammal | Dactylopsila palpator | Long-fingered triok | 7.03 g |
| Mammal | Dactylopsila tatei | Tate’s triok / Fergusson Island striped possum | 4.53 g |
| Mammal | Dactylopsila trivirgata | Common striped possum | 5.93 g |
| Fish | Dactyloptena orientalis | Oriental flying gurnard / Purple flying gurnard | 296 mg |
| Fish | Dactylopterus volitans | Flying gurnard / Helmet gurnard | 140 mg |
| Fish | Dactyloscopus tridigitatus | Sand stargazer | 7.7 mg |
| Fish | Dalatias licha | Kitefin shark / Seal shark | 2.24 g |
| Mammal | Dama dama | European fallow deer / Common fallow deer | 222 g |
| Mammal | Damaliscus lunatus | Topi / Sassaby / Tiang / Tsessebe | 307 g |
| Mammal | Damaliscus pygargus | Bontebok | 255 g |
| Bird | Daphoenositta chrysoptera | Varied sittella / Australian nuthatch / Orange-winged sittella / Barkpecker | 632 mg |
| Bird | Daption capense | Pintado petrel / Cape petrel / Cape fulmar | 4.8 g |
| Bird | Daptrius albogularis | White-throated caracara / Darwin’s caracara | 3 g |
| Bird | Daptrius ater | Black caracara | 5.47 g |
| Bird | Daptrius australis | Striated caracara / Forster’s caracara / Johnny rook | 10.9 g |
| Bird | Daptrius chimango | Chimango caracara / Chimango / Tiuque | 4.53 g |
| Reptile | Darevskia raddei | Azerbaijan lizard | 51 mg |
| Fish | Dascyllus albisella | Hawaiian dascyllus / Hawaiian domino / Domino damselfish / White-spotted damsel | 174 mg |
| Fish | Dascyllus aruanus | Whitetail dascyllus / Humbug damselfish | 51.5 mg |
| Fish | Dascyllus marginatus | Marginate dascyllus / Red Sea dascyllus | 65 mg |
| Fish | Dascyllus reticulatus | Reticulate dascyllus / Two-stripe damselfish | 83 mg |
| Fish | Dascyllus trimaculatus | Threespot dascyllus / Domino damsel / Domino | 226 mg |
| Reptile | Dasia olivacea | Olive dasia / Olive tree skink | 127 mg |
| Fish | Dasyatis pastinaca | Common stingray | 24.1 g |
| Fish | Dasyatis thetidis | Thorntail stingray / Black stingray / Longtail stingray | 29.5 g |
| Mammal | Dasycercus cristicauda | Crest-tailed mulgara | 1.26 g |
| Mammal | Dasykaluta rosamondae | Little red kaluta / Little red antechinus / Russet antechinus / Spinifex antechinus | 550 mg |
| Bird | Dasylophus cumingi | Scale-feathered malkoha | 3.27 g |
| Bird | Dasylophus superciliosus | Rough-crested malkoha | 2.61 g |
| Bird | Dasyornis brachypterus | Eastern bristlebird | 1.5 g |
| Bird | Dasyornis broadbenti | Rufous bristlebird | 1.95 g |
| Insect | Dasypoda hirtipes | Pantaloon bee / Hairy-legged mining bee | 1.47 mg |
| Mammal | Dasyprocta leporina | Red-rumped agouti / Golden-rumped agouti / Orange-rumped agouti / Brazilian agouti | 20.9 g |
| Mammal | Dasyprocta prymnolopha | Black-rumped agouti | 21.6 g |
| Mammal | Dasyprocta punctata | Central American agouti | 25 g |
| Mammal | Dasypus novemcinctus | Nine-banded armadillo / Common armadillo / Nine-banded long-nosed armadillo | 10.4 g |
| Mammal | Dasyuroides byrnei | Kowari / Kariri / Brush-tailed marsupial rat / Bushy-tailed marsupial rat | 1.53 g |
| Mammal | Dasyurus albopunctatus | New Guinean quoll / New Guinea quoll / New Guinea native cat | 3.86 g |
| Mammal | Dasyurus geoffroii | Western quoll / Chuditch | 5.26 g |
| Mammal | Dasyurus hallucatus | Northern quoll / Northern native cat / North Australian native cat / Satanellus | 4.41 g |
| Mammal | Dasyurus maculatus | Tiger quoll / Spotted-tailed quoll / Spotted quoll / Spotted-tailed dasyure | 9.58 g |
| Mammal | Dasyurus spartacus | Bronze quoll | 5.4 g |
| Mammal | Dasyurus viverrinus | Eastern quoll / Eastern native cat | 5.22 g |
| Mammal | Daubentonia madagascariensis | Aye-aye | 44.6 g |
| Fish | Daysciaena albida | Bengal corvina | 269 mg |
| Fish | Deania calcea | Birdbeak dogfish | 4.54 g |
| Fish | Deania quadrispinosa | Longsnout dogfish | 3.47 g |
| Fish | Decapterus macrosoma | Shortfin scad | 785 mg |
| Fish | Decapterus muroadsi | Amberstripe scad | 978 mg |
| Fish | Decapterus tabl | Roughear scad | 1.49 g |
| Insect | Deilephila elpenor | Elephant hawk moth / Large elephant hawk moth | 0.398 mg |
| Spider | Deinopis spinosa | Ogrefaced spider / Net-casting spider | 0.033 mg |
| Bird | Delichon urbicum | Western house martin / Common house martin / Northern house martin | 477 mg |
| Reptile | Delma australis | Southern legless lizard / Marble-faced delma | 11.8 mg |
| Mammal | Delphinapterus leucas | Beluga whale / White whale / Sea canary | 2.02 kg |
| Mammal | Delphinus delphis | Common dolphin | 799 g |
| Fish | Deltentosteus quadrimaculatus | Four-spotted goby | 14.2 mg |
| Bird | Dendragapus obscurus | Dusky grouse | 3.18 g |
| Fish | Dendrochirus brachypterus | Dwarf lionfish / Short-finned turkeyfish / Shortspine rockcod / Shortspine scorpionfish | 65 mg |
| Bird | Dendrocincla fuliginosa | Plain-brown woodcreeper | 1.1 g |
| Bird | Dendrocitta cinerascens | Bornean treepie | 2.8 g |
| Bird | Dendrocitta formosae | Grey treepie / Himalayan treepie | 2.4 g |
| Bird | Dendrocitta occipitalis | Sumatran treepie / Sunda treepie | 2.7 g |
| Bird | Dendrocitta vagabunda | Rufous treepie | 2.8 g |
| Bird | Dendrocolaptes certhia | Amazonian barred woodcreeper | 1.8 g |
| Bird | Dendrocolaptes platyrostris | Planalto woodcreeper | 1.37 g |
| Bird | Dendrocopos major | Great spotted woodpecker | 2.61 g |
| Bird | Dendrocopos medius | Middle spotted woodpecker | 2.05 g |
| Bird | Dendrocygna arborea | West Indian whistling duck / Black-billed whistling duck / Cuban whistling duck | 6 g |
| Bird | Dendrocygna arcuata | Wandering whistling duck | 4.64 g |
| Bird | Dendrocygna autumnalis | Black-bellied whistling duck / Black-bellied tree duck | 4.7 g |
| Bird | Dendrocygna eytoni | Plumed whistling duck / Grass whistling duck | 4.72 g |
| Bird | Dendrocygna viduata | White-faced whistling duck | 4.43 g |
| Mammal | Dendrohyrax arboreus | Southern tree hyrax / Southern tree dassie | 12.3 g |
| Mammal | Dendrolagus bennettianus | Bennett’s tree-kangaroo | 18.5 g |
| Mammal | Dendrolagus dorianus | Doria’s tree-kangaroo | 32.9 g |
| Mammal | Dendrolagus goodfellowi | Goodfellow’s tree-kangaroo / Ornate tree-kangaroo | 28.9 g |
| Mammal | Dendrolagus inustus | Grizzled tree-kangaroo | 30.6 g |
| Mammal | Dendrolagus lumholtzi | Lumholtz’s tree-kangaroo | 26.7 g |
| Mammal | Dendrolagus matschiei | Matschie’s tree-kangaroo / Huon tree-kangaroo / Boongarry | 28 g |
| Mammal | Dendrolagus scottae | Tenkile / Scott’s tree-kangaroo | 29.7 g |
| Mammal | Dendrolagus spadix | Lowlands tree-kangaroo / Lowland tree-kangaroo | 29 g |
| Mammal | Dendrolagus ursinus | Ursine tree-kangaroo / Black tree-kangaroo / Vogelkop tree-kangaroo / White-throated tree-kangaroo | 26.8 g |
| Fish | Dendrophysa russelii | Goatee croaker | 175 mg |
| Bird | Dendropicos fuscescens | Cardinal woodpecker | 1.26 g |
| Bird | Dendroplex picus | Straight-billed woodcreeper | 1.35 g |
| Fish | Dentiraja confusa | Australian longnose skate | 1.8 g |
| Fish | Dentiraja lemprieri | Thornback skate | 1.41 g |
| Fish | Dentiraja polyommata | Argus skate | 1.25 g |
| Mammal | Dermanura cinerea | Gervais’s fruit-eating bat | 469 mg |
| Mammal | Dermanura glauca | Silver fruit-eating bat | 476 mg |
| Mammal | Dermanura phaeotis | Pygmy fruit-eating bat | 448 mg |
| Mammal | Dermanura tolteca | Toltec fruit-eating bat | 544 mg |
| Reptile | Dermochelys coriacea | Leatherback sea turtle / Lute turtle / Leathery turtle / Luth | 31 mg |
| Bird | Deroptyus accipitrinus | Red-fan parrot / Hawk-headed parrot | 8.02 g |
| Mammal | Desmana moschata | Russian desman | 3.74 g |
| Mammal | Desmodus rotundus | Common vampire bat | 931 mg |
| Amphibian | Desmognathus monticola | Seal salamander | 10.5 mg |
| Amphibian | Desmognathus quadramaculatus | Blackbelly salamander | 12.9 mg |
| Bird | Dessonornis caffer | Cape robin-chat | 1.06 g |
| Bird | Devioeca papuana | Canary flyrobin / Papuan flycatcher / Canary robin / Canary flycatcher | 601 mg |
| Mammal | Diaemus youngi | White-winged vampire bat | 971 mg |
| Bird | Dicaeum hirundinaceum | Mistletoebird / Mistletoe flowerpecker | 382 mg |
| Amphibian | Dicamptodon ensatus | California giant salamander | 117 mg |
| Fish | Dicentrarchus labrax | European seabass / Common bass / Branzino / European bass | 727 mg |
| Mammal | Diceros bicornis | Black rhinoceros / Black rhino / Hooked-lip rhinoceros | 655 g |
| Fish | Dichotomyctere fluviatilis | Green pufferfish / Ceylon pufferfish | 40 mg |
| Mammal | Dicotyles tajacu | Collared peccary / Musk hog / Javelina / Saíno | 86.9 g |
| Mammal | Dicrostonyx groenlandicus | Northern collared lemming / Nearctic collared lemming / Peary Land collared lemming | 826 mg |
| Mammal | Dicrostonyx richardsoni | Richardson’s collared lemming | 898 mg |
| Mammal | Dicrostonyx torquatus | Arctic lemming | 840 mg |
| Bird | Dicrurus bracteatus | Spangled drongo | 1.86 g |
| Bird | Dicrurus hottentottus | Hair-crested drongo | 2.03 g |
| Mammal | Didelphis aurita | Big-eared opossum / Saruê / Gambá | 5.39 g |
| Mammal | Didelphis marsupialis | – | 5.73 g |
| Mammal | Didelphis virginiana | Virginia opossum / North American opossum | 6.94 g |
| Bird | Didunculus strigirostris | Tooth-billed pigeon / Manumea | 2.89 g |
| Fish | Dinematichthys iluocoeteoides | Yellow pigmy brotula | 20.7 mg |
| Mammal | Dinomys branickii | Pacarana | 27 g |
| Bird | Dinopium javanense | Common flameback / Common goldenback | 2.77 g |
| Fish | Diodon holocanthus | Long-spine porcupinefish / Balloonfish / Freckled porcupinefish / Porcupine puffer | 776 mg |
| Fish | Diodon hystrix | Spot-fin porcupinefish / Spotted porcupinefish / Black-spotted porcupinefish / Porcupinefish | 919 mg |
| Bird | Diomedea exulans | Snowy albatross / Wandering albatross / White-winged albatross / Goonie | 29 g |
| Bird | Diopsittaca nobilis | Red-shouldered macaw | 6.05 g |
| Mammal | Diphylla ecaudata | Hairy-legged vampire bat | 801 mg |
| Reptile | Diplodactylus conspicillatus | Variable fat-tailed gecko / Burrow-plug gecko | 25 mg |
| Reptile | Diplodactylus tessellatus | Tessellated gecko | 31.3 mg |
| Dinosaur | Diplodocus longus | Diplodocus | 57 g |
| Fish | Diplodus annularis | Annular seabream | 328 mg |
| Fish | Diplodus cervinus | Zebra sea bream | 713 mg |
| Fish | Diplodus noct | Red Sea seabream | 447 mg |
| Fish | Diplomystes nahuelbutaensis | – | 47 mg |
| Fish | Diploprion bifasciatum | Barred soapfish / Double-banded soapfish / Two banded grouper / Two-banded sea perch | 251 mg |
| Mammal | Dipodillus campestris | North African gerbil | 900 mg |
| Mammal | Dipodillus dasyurus | Wagner’s gerbil / Rough-tailed dipodil / Wadi Hof gerbil | 1.32 g |
| Mammal | Dipodomys agilis | Agile kangaroo rat | 1.34 g |
| Mammal | Dipodomys deserti | Desert kangaroo rat | 1.72 g |
| Mammal | Dipodomys heermanni | Heermann’s kangaroo rat | 1.44 g |
| Mammal | Dipodomys merriami | Merriam’s kangaroo rat | 983 mg |
| Mammal | Dipodomys microps | Chisel-toothed kangaroo rat | 1.22 g |
| Mammal | Dipodomys ordii | Ord’s kangaroo rat | 1.46 g |
| Mammal | Dipodomys panamintinus | Panamint kangaroo rat | 1.6 g |
| Mammal | Dipodomys spectabilis | Banner-tailed kangaroo rat | 1.98 g |
| Reptile | Diporiphora bilineata | Northern two-line dragon / Two-lined dragon | 49.3 mg |
| Reptile | Diporiphora lalliae | Lally’s two-line dragon / Northern deserts dragon | 74.4 mg |
| Insect | Diprion similis | Introduced pine sawfly / Imported pine sawfly / White pine sawfly | 0.52 mg |
| Fish | Dipturus canutus | Grey skate | 3.2 g |
| Fish | Dipturus gudgeri | Bight skate / Greenback skate | 2.68 g |
| Fish | Dipturus innominatus | New Zealand smooth skate | 1.49 g |
| Fish | Dipturus nidarosiensis | Norwegian skate / Black skate | 7.38 g |
| Fish | Dischistodus perspicillatus | White damsel | 158 mg |
| Amphibian | Discoglossus pictus | Mediterranean painted frog / Painted frog | 66.6 mg |
| Bird | Discosura popelairii | Wire-crested thorntail | 176 mg |
| Fish | Dissostichus eleginoides | Patagonian toothfish / Chilean sea bass / Mero | 1.47 g |
| Mammal | Distoechurus pennatus | Feather-tailed possum | 957 mg |
| Bird | Diuca diuca | Diuca finch | 1.33 g |
| Bird | Dives dives | Melodious blackbird | 2.28 g |
| Mammal | Dobsonia inermis | Solomon’s naked-backed fruit bat | 2.7 g |
| Mammal | Dobsonia moluccensis | Bare-backed fruit bat / Moluccan naked-backed fruit bat | 4.43 g |
| Mammal | Dobsonia praedatrix | New Britain naked-backed fruit bat | 2.97 g |
| Bird | Dolichonyx oryzivorus | Bobolink | 1.06 g |
| Mammal | Dolichotis patagonum | Patagonian mara / Patagonian cavy / Patagonian hare | 30.7 g |
| Mammal | Dolichotis salinicola | Chacoan mara / Chacoan cavy | 15.3 g |
| Bird | Donacobius atricapilla | Black-capped donacobius | 1.19 g |
| Mammal | Dorcopsis atrata | Black dorcopsis / Black forest wallaby | 17 g |
| Mammal | Dorcopsis hageni | White-striped dorcopsis / Greater forest wallaby | 22.9 g |
| Mammal | Dorcopsis luctuosa | Gray dorcopsis / Gray forest wallaby | 21 g |
| Mammal | Dorcopsis muelleri | Brown dorcopsis / Brown forest wallaby | 20.8 g |
| Mammal | Dorcopsulus macleayi | Macleay’s dorcopsis / Papuan dorcopsis / Papuan forest wallaby | 13.7 g |
| Mammal | Dorcopsulus vanheurni | Small dorcopsis / Lesser forest wallaby | 12 g |
| Fish | Dormitator latifrons | Pacific fat sleeper | 50.5 mg |
| Bird | Doryfera ludovicae | Green-fronted lancebill | 254 mg |
| Fish | Doryichthys boaja | Long-snouted pipefish | 20.2 mg |
| Fish | Doryichthys deokhatoides | – | 2.2 mg |
| Fish | Doryichthys martensii | Longsnouted pipefish | 2.8 mg |
| Insect | Dorymyrmex bicolor | Bicolored pyramid ant | 0.075 mg |
| Fish | Doryrhamphus japonicus | Honshu pipefish | 3.4 mg |
| Reptile | Draco sumatranus | Common gliding lizard | 43.2 mg |
| Reptile | Draco volans | Common flying dragon | 58 mg |
| Mammal | Dremomys rufigenis | Asian red-cheeked squirrel | 5.41 g |
| Bird | Driophlox fuscicauda | Red-throated ant tanager | 1.39 g |
| Bird | Dromaius novaehollandiae | Emu | 27.1 g |
| Bird | Dromas ardeola | Crab-plover / Crab plover | 3.9 g |
| Fish | Drombus triangularis | Brown drombus | 26.8 mg |
| Dinosaur | Dromiceiomimus brevitertius | Dromiceiomimus | 87.9 g |
| Mammal | Dromiciops gliroides | Monito del monte / Colocolo opossum | 825 mg |
| Bird | Dromococcyx pavoninus | Pavonine cuckoo | 860 mg |
| Bird | Dromococcyx phasianellus | Pheasant cuckoo | 1.11 g |
| Insect | Drosophila melanogaster | Fruit fly / Lesser fruit fly / Vinegar fly | 0.004 mg |
| Bird | Drymodes brunneopygia | Southern scrub robin | 982 mg |
| Bird | Dryobates borealis | Red-cockaded woodpecker | 1.72 g |
| Bird | Dryobates minor | Lesser spotted woodpecker | 1.2 g |
| Bird | Dryobates pubescens | Downy woodpecker | 1.25 g |
| Bird | Dryobates scalaris | Ladder-backed woodpecker | 1.43 g |
| Bird | Dryocopus lineatus | Lineated woodpecker | 4.3 g |
| Bird | Dryocopus martius | Black woodpecker | 7.41 g |
| Bird | Dryocopus pileatus | Pileated woodpecker | 7.04 g |
| Amphibian | Dryophytes versicolor | Common gray treefrog / Eastern gray treefrog / Northern gray treefrog / Tetraploid gray treefrog | 41.8 mg |
| Bird | Dryoscopus cubla | Black-backed puffback | 1.17 g |
| Bird | Dryoscopus senegalensis | Red-eyed puffback | 1.4 g |
| Bird | Ducula aenea | Green imperial pigeon | 3.17 g |
| Bird | Ducula badia | Mountain imperial pigeon / Maroon-backed imperial pigeon / Hodgson’s imperial pigeon | 3.16 g |
| Bird | Ducula bicolor | Pied imperial pigeon / Balud-puti | 3.16 g |
| Bird | Ducula goliath | Goliath imperial pigeon / New Caledonian imperial pigeon / Notou | 3.5 g |
| Bird | Ducula luctuosa | Silver-tipped imperial pigeon / White imperial pigeon / White-tipped imperial pigeon | 3.21 g |
| Bird | Ducula melanochroa | Black imperial pigeon / Bismarck imperial pigeon | 3.94 g |
| Bird | Ducula oceanica | Micronesian imperial pigeon / Micronesian pigeon / Belochel | 1.9 g |
| Bird | Ducula pacifica | Pacific imperial pigeon / Pacific pigeon / Pacific fruit pigeon / Lupe | 2.54 g |
| Bird | Ducula perspicillata | Spectacled imperial pigeon | 3.52 g |
| Bird | Ducula pinon | Pinon’s imperial pigeon / Pinon imperial pigeon | 3.92 g |
| Bird | Ducula radiata | Grey-headed imperial pigeon | 2.12 g |
| Amphibian | Duellmanohyla uranochroa | Costa Rica brook frog / Red-eyed stream frog | 22.9 mg |
| Mammal | Dugong dugon | Dugong | 265 g |
| Bird | Dulus dominicus | Palmchat | 1.32 g |
| Bird | Dumetella carolinensis | Gray catbird / Grey catbird / Slate-colored mockingbird | 1.24 g |
| Fish | Dunckerocampus dactyliophorus | Banded pipefish / Ringed pipefish | 2.8 mg |
| Fish | Dunckerocampus pessuliferus | Yellowbanded pipefish | 6.1 mg |
| Fish | Dussumieria elopsoides | Slender rainbow sardine | 121 mg |
| Amphibian | Duttaphrynus melanostictus | Asian common toad / Asian black-spined toad / Asian toad / Black-spectacled toad | 59.1 mg |
| Bird | Dysithamnus mentalis | Plain antvireo | 728 mg |
| Fish | Echeneis naucrates | Live sharksucker / Slender sharksucker | 1.18 g |
| Fish | Echidna nebulosa | Snowflake moray / Clouded moray / Puhi-kapa | 45 mg |
| Fish | Echiichthys vipera | Lesser weever | 95.6 mg |
| Mammal | Echimys chrysurus | White-faced spiny tree-rat | 5.02 g |
| Mammal | Echinops telfairi | Lesser hedgehog tenrec | 557 mg |
| Mammal | Echinosorex gymnura | – | 4.5 g |
| Fish | Echiodon drummondii | Drummond’s echiodon / Drummond’s pearlfish / Pearlfish | 31 mg |
| Reptile | Echis carinatus | Sindh saw-scaled viper / Saw-scaled viper / Indian saw-scaled viper / Little Indian viper | 98 mg |
| Mammal | Echymipera clara | Clara’s echymipera / Clara’s spiny bandicoot / White-lipped bandicoot | 4.56 g |
| Mammal | Echymipera kalubu | Common echymipera / Common spiny bandicoot | 3.74 g |
| Mammal | Echymipera rufescens | Long-nosed echymipera / Long-nosed spiny bandicoot | 3.8 g |
| Insect | Eciton burchellii | Eciton army ant | 0.202 mg |
| Bird | Eclectus roratus | Moluccan eclectus | 7.62 g |
| Insect | Ectatomma ruidum | – | 0.22 mg |
| Insect | Ectatomma tuberculatum | – | 0.387 mg |
| Fish | Ectodus descampsii | Descamp’s strange-tooth cichlid | 63 mg |
| Dinosaur | Edmontosaurus annectens | Anatosaurus / Anatotitan | 200 g |
| Dinosaur | Edmontosaurus regalis | Anatosaurus / Anatotitan | 150 g |
| Bird | Edolisoma tenuirostre | Sahul cicadabird / Common cicadabird /Slender-billed cicadabird | 1.78 g |
| Reptile | Egernia cunninghami | Cunningham’s spiny-tailed skink / Cunningham’s skink | 312 mg |
| Reptile | Egernia striolata | Tree-crevice skink / Tree skink | 166 mg |
| Bird | Egretta caerulea | Little blue heron | 3.7 g |
| Bird | Egretta garzetta | Little egret | 3.64 g |
| Bird | Egretta novaehollandiae | White-faced heron / White-fronted heron | 4.05 g |
| Bird | Egretta rufescens | Reddish egret | 3.5 g |
| Bird | Egretta thula | Snowy egret | 3.74 g |
| Mammal | Eidolon helvum | Straw-coloured fruit bat | 4.36 g |
| Mammal | Eira barbara | Tayra / Tolomuco / High-woods dog | 42.4 g |
| Bird | Elaenia albiceps | White-crested elaenia | 528 mg |
| Bird | Elaenia frantzii | Mountain elaenia | 631 mg |
| Bird | Elaenia martinica | Caribbean elaenia | 672 mg |
| Bird | Elanus axillaris | Black-shouldered kite / Australian black-shouldered kite | 3.49 g |
| Bird | Elanus leucurus | White-tailed kite | 3.07 g |
| Reptile | Elaphe quatuorlineata | Four-lined snake / Bulgarian ratsnake | 275 mg |
| Reptile | Elaphe taeniura | Beauty rat snake / Beauty ratsnake / Beauty snake / Cave racer | 336 mg |
| Fish | Eleginus nawaga | Navaga | 326 mg |
| Fish | Eleotris acanthopomus | Spinecheek gudgeon | 13.4 mg |
| Fish | Eleotris fusca | Dusky sleeper / Brown spinecheek gudgeon | 84 mg |
| Fish | Eleotris melanosoma | Broadhead sleeper / Dusky sleeper | 49.4 mg |
| Fish | Eleotris oxycephala | – | 63.6 mg |
| Fish | Eleotris sandwicensis | Sandwich Island sleeper / Hawaiian sleeper / Oʻopu | 37.5 mg |
| Mammal | Elephantulus fuscipes | Dusky-footed elephant shrew / Dusky-footed sengi | 1.25 g |
| Mammal | Elephantulus intufi | Bushveld elephant shrew / Bushveld sengi | 1.14 g |
| Mammal | Elephantulus myurus | Eastern rock elephant shrew / Eastern rock sengi | 1.37 g |
| Mammal | Elephas maximus | Asian elephant / Asiatic elephant | 5.08 kg |
| Fish | Ellochelon vaigiensis | Squaretail mullet / Diamondscale mullet | 402 mg |
| Fish | Elops hawaiensis | Hawaiian ladyfish / Hawaiian tenpounder / Banana fish / Giant herring | 26.9 mg |
| Mammal | Emballonura monticola | Lesser sheath-tailed bat | 163 mg |
| Mammal | Emballonura raffrayana | Raffray’s sheath-tailed bat | 174 mg |
| Mammal | Emballonura semicaudata | Pacific sheath-tailed bat / Polynesian sheath-tailed bat | 184 mg |
| Bird | Emberiza aureola | Yellow-breasted bunting | 710 mg |
| Bird | Emberiza calandra | Corn bunting | 1.17 g |
| Bird | Emberiza cirlus | Cirl bunting | 790 mg |
| Bird | Emberiza citrinella | Yellowhammer | 792 mg |
| Bird | Emberiza elegans | Yellow-throated bunting / Elegant bunting | 640 mg |
| Bird | Emberiza hortulana | Ortolan / Ortolan bunting | 723 mg |
| Bird | Emberiza melanocephala | Black-headed bunting | 731 mg |
| Bird | Emberiza rutila | Chestnut bunting | 589 mg |
| Bird | Emberiza schoeniclus | Common reed bunting | 711 mg |
| Bird | Emberiza spodocephala | Black-faced bunting | 962 mg |
| Reptile | Emoia atrocostata | Littoral whiptail-skink / Mangrove skink / Littoral skink | 84.7 mg |
| Reptile | Emoia cyanura | Copper-tailed skink | 28.3 mg |
| Reptile | Emoia pallidiceps | De Vis’s emo skink | 38.8 mg |
| Reptile | Emoia submetallica | Madeay’s emo skink | 36 mg |
| Bird | Empidonax minimus | Least flycatcher / Chebec / Chebecker | 382 mg |
| Bird | Empidonax virescens | Acadian flycatcher | 448 mg |
| Reptile | Emydura subglobosa | Red-bellied short-necked turtle / Pink-bellied side-necked turtle / Jardine River turtle | 431 mg |
| Reptile | Emys orbicularis | European pond turtle / European pond terrapin / European pond tortoise | 250 mg |
| Fish | Enchelycore bayeri | Hookjaw moray / Bowmouth moray / Bayer’s moray | 30 mg |
| Fish | Enchelynassa canina | Viper moray | 198 mg |
| Fish | Enchelyopus cimbrius | Fourbeard rockling / Four-bearded rockling | 171 mg |
| Mammal | Enhydra lutris | Sea otter | 122 g |
| Bird | Enicognathus ferrugineus | Austral parakeet / Austral conure / Emerald parakeet / Cachaña | 5.51 g |
| Bird | Enicognathus leptorhynchus | Slender-billed parakeet / Choroy | 7.87 g |
| Bird | Enicurus scouleri | Little forktail | 789 mg |
| Amphibian | Ensatina eschscholtzii | Ensatina | 27 mg |
| Fish | Entelurus aequoreus | Snake pipefish | 22.2 mg |
| Fish | Entomacrodus epalzeocheilos | Fringelip rockskipper | 46.7 mg |
| Fish | Entomacrodus striatus | Reef margin blenny | 22.8 mg |
| Fish | Entomacrodus vermiculatus | Vermiculated blenny | 108 mg |
| Bird | Entomyzon cyanotis | Blue-faced honeyeater / Bananabird | 2.31 g |
| Bird | Eolophus roseicapilla | Galah / Pink and grey cockatoo / Galah cockatoo / Rose-breasted cockatoo | 6.86 g |
| Mammal | Eonycteris spelaea | Cave nectar bat / Common dawn bat / Common nectar bat / Lesser dawn bat | 1.23 g |
| Bird | Eopsaltria australis | Eastern yellow robin | 890 mg |
| Bird | Eopsaltria capito | Pale-yellow robin | 798 mg |
| Bird | Eopsaltria georgiana | White-breasted robin | 777 mg |
| Bird | Eopsaltria griseogularis | Western yellow robin | 860 mg |
| Bird | Eopsaltria leucops | White-faced robin | 611 mg |
| Bird | Eopsaltria placens | Banded yellow robin / Olive-yellow robin | 1.02 g |
| Insect | Ephestia kuehniella | Mediterranean flour moth / Mill moth | 0.005 mg |
| Bird | Ephippiorhynchus asiaticus | Black-necked stork | 18.3 g |
| Bird | Ephippiorhynchus senegalensis | Saddle-billed stork / Saddlebill | 20.5 g |
| Fish | Epibulus insidiator | Slingjaw wrasse | 447 mg |
| Reptile | Epicrates cenchria | Rainbow boa | 280 mg |
| Amphibian | Epidalea calamita | Natterjack toad | 74.3 mg |
| Fish | Epigonus telescopus | Black cardinal fish | 624 mg |
| Bird | Epinecrophylla fulviventris | Checker-throated stipplethroat / Fulvous-bellied antwren /Checker-throated antwren | 499 mg |
| Fish | Epinephelus corallicola | Black-dotted cod / Coral cod / Coral rockcod / Duskyfin grouper | 410 mg |
| Fish | Epinephelus cyanopodus | Speckled blue grouper / Blue maori / Purple rock cod / Speckled grouper | 629 mg |
| Fish | Epinephelus fasciatus | Blacktip grouper / Redbanded grouper / Blacktipped cod / Black-tipped rockcod | 359 mg |
| Fish | Epinephelus hexagonatus | Star-spotted groper / Wirenet rockcod | 292 mg |
| Fish | Epinephelus itajara | Atlantic goliath grouper / Itajara | 2.31 g |
| Fish | Epinephelus longispinis | Longspine grouper / Streaky spot grouper | 247 mg |
| Fish | Epinephelus maculatus | Highfin grouper / Blackfin cod / Brown-spotted rock-cod / Marbled rock-cod | 675 mg |
| Fish | Epinephelus malabaricus | Malabar grouper / Blackspot rockcod / Estuary rockcod / Giant rock cod | 104 mg |
| Fish | Epinephelus melanostigma | One-blotch grouper | 406 mg |
| Fish | Epinephelus merra | Honeycomb grouper / Common birdwire rockcod / Black-spotted rock-cod / Dwarf spotted rockcod | 210 mg |
| Fish | Epinephelus polyphekadion | Camouflage grouper / Blue-tailed cod / Camouflage rockcod / Small-toothed rockcod | 710 mg |
| Fish | Epinephelus socialis | Surge grouper | 716 mg |
| Fish | Epinephelus summana | Summan grouper | 391 mg |
| Fish | Epinephelus tauvina | Greasy grouper / Arabian grouper / Greasy rockcod | 782 mg |
| Mammal | Epomophorus gambianus | Gambian epauletted fruit bat | 4.33 g |
| Mammal | Epomophorus labiatus | Ethiopian epauletted fruit bat | 1.59 g |
| Mammal | Epomophorus wahlbergi | Wahlberg’s epauletted fruit bat | 1.96 g |
| Mammal | Epomops franqueti | Franquet’s epauletted fruit bat | 2.21 g |
| Fish | Eptatretus burgeri | Inshore hagfish | 17.5 mg |
| Mammal | Eptesicus brasiliensis | Brazilian brown bat | 198 mg |
| Mammal | Eptesicus furinalis | Argentine brown bat | 190 mg |
| Mammal | Eptesicus fuscus | Big brown bat | 261 mg |
| Mammal | Eptesicus pachyotis | Thick-eared bat | 158 mg |
| Bird | Epthianura albifrons | White-fronted chat | 549 mg |
| Bird | Epthianura aurifrons | Orange chat | 448 mg |
| Bird | Epthianura tricolor | Crimson chat / Tricoloured chat / Saltbush canary / Crimson-breasted nun | 458 mg |
| Mammal | Equus asinus | Donkey / Ass | 399 g |
| Mammal | Equus caballus | Horse | 599 g |
| Mammal | Equus quagga | Plains zebra | 557 g |
| Mammal | Equus zebra | Mountain zebra | 552 g |
| Spider | Eratigena atrica | Giant house spider | 0.138 mg |
| Reptile | Eremias argus | Mongolia racerunner | 52 mg |
| Reptile | Eremiascincus fasciolatus | Narrow-banded sand-swimmer / Thick-tailed skink | 46.2 mg |
| Reptile | Eremiascincus isolepis | Northern bar-lipped skink / Short-legged slender skink | 46.2 mg |
| Bird | Eremophila alpestris | Horned lark / Shore lark | 921 mg |
| Bird | Eremophila bilopha | Temminck’s lark / Temminck’s horned lark | 850 mg |
| Mammal | Erethizon dorsatum | North American porcupine / Canadian porcupine | 23.1 g |
| Fish | Eretmodus cyanostictus | Tanganyika clown / Striped goby cichlid | 69 mg |
| Mammal | Erignathus barbatus | Bearded seal / Square-flipper seal | 441 g |
| Mammal | Erinaceus europaeus | European hedgehog / Common hedgehog / West European hedgehog | 3.58 g |
| Bird | Erithacus rubecula | European robin / Robin / Robin redbreast | 646 mg |
| Fish | Erotelis smaragdus | Emerald sleeper | 38.8 mg |
| Mammal | Erythrocebus patas | Common patas monkey / Hussar monkey | 100 g |
| Bird | Erythrogonys cinctus | Red-kneed dotterel | 1.05 g |
| Bird | Erythropitta erythrogaster | Philippine pitta / Blue-breasted pitta | 950 mg |
| Bird | Erythrura trichroa | Blue-faced parrotfinch | 600 mg |
| Reptile | Eryx colubrinus | Kenyan sand boa / East African sand boa / Egyptian sand boa / Kenya sand boa | 80.5 mg |
| Bird | Esacus magnirostris | Beach stone-curlew / Beach thick-knee | 5.54 g |
| Mammal | Eschrichtius robustus | Gray whale / Grey whale | 4.31 kg |
| Fish | Esox lucius | Northern pike / Pickerel / Jack / Pike | 410 mg |
| Bird | Estrilda astrild | Common waxbill / St Helena waxbill | 350 mg |
| Bird | Estrilda melpoda | Orange-cheeked waxbill | 372 mg |
| Bird | Estrilda troglodytes | Black-rumped waxbill | 360 mg |
| Fish | Etelis carbunculus | Deep-water red snapper / Ruby snapper / Longtail snapper / Ehu | 1.86 g |
| Fish | Etelis oculatus | Queen snapper / Night snapper / Brim snapper | 1.64 g |
| Fish | Etmopterus granulosus | Southern lanternshark | 1.92 g |
| Fish | Etmopterus lucifer | Blackbelly lanternshark / Lucifer shark | 609 mg |
| Fish | Etmopterus spinax | Velvet belly lanternshark / Velvet belly | 2.43 g |
| Fish | Etroplus suratensis | Green chromide / Pearlspot cichlid / Banded pearlspot / Striped chromide | 227 mg |
| Mammal | Eubalaena australis | Southern right whale | 2.75 kg |
| Reptile | Eublepharis macularius | Common leopard gecko | 128 mg |
| Bird | Eubucco bourcierii | Red-headed barbet | 1.08 g |
| Insect | Eucera elongatula | – | 1.59 mg |
| Insect | Eucera notata | – | 1.7 mg |
| Insect | Eucera rufa | – | 2.14 mg |
| Fish | Eucinostomus gula | Jenny mojarra | 150 mg |
| Bird | Eudocimus albus | American white ibis | 7.04 g |
| Bird | Eudocimus ruber | Scarlet ibis / Red ibis | 7.04 g |
| Mammal | Eudorcas thomsonii | Thomson’s gazelle / Tommie | 90.9 g |
| Bird | Eudromia elegans | Elegant crested tinamou / Martineta tinamou | 2.29 g |
| Bird | Eudromia formosa | Quebracho crested tinamou | 1.84 g |
| Bird | Eudynamys orientalis | Pacific koel / Eastern koel / Common koel | 2.55 g |
| Bird | Eudynamys scolopaceus | Asian koel | 2.55 g |
| Bird | Eudyptes chrysocome | Western rockhopper penguin | 13.2 g |
| Bird | Eudyptes chrysolophus | Macaroni penguin | 13 g |
| Bird | Eudyptes schlegeli | Royal penguin | 19.2 g |
| Bird | Eudyptula minor | Little penguin / Fairy penguin / Little blue penguin / Blue penguin | 7.79 g |
| Reptile | Eugongylus albofasciolatus | White-striped cape skink / Barred shark skink | 159 mg |
| Bird | Eulampis holosericeus | Green-throated carib | 249 mg |
| Bird | Eulampis jugularis | Purple-throated carib | 332 mg |
| Mammal | Eulemur albifrons | White-headed lemur / White-headed brown lemur / White-fronted brown lemur / White-fronted lemur | 21.9 g |
| Mammal | Eulemur cinereiceps | Gray-headed lemur / Gray-headed brown lemur / White-collared brown lemur /White-collared lemur | 22.1 g |
| Mammal | Eulemur coronatus | Crowned lemur | 21 g |
| Mammal | Eulemur fulvus | Common brown lemur | 21.6 g |
| Mammal | Eulemur macaco | Black lemur | 23.7 g |
| Mammal | Eulemur mongoz | Mongoose lemur | 23.2 g |
| Mammal | Eulemur rubriventer | Red-bellied lemur | 26.7 g |
| Mammal | Eulemur rufus | Red lemur / Rufous brown lemur / Northern red-fronted lemur | 25.4 g |
| Reptile | Eumeces schneiderii | Schneider’s skink | 172 mg |
| Mammal | Eumetopias jubatus | Steller sea lion / Steller’s sea lion / Northern sea lion | 641 g |
| Mammal | Eumops auripendulus | Black bonneted bat / Shaw’s mastiff bat | 612 mg |
| Mammal | Eumops glaucinus | Wagner’s bonneted bat / Wagner’s mastiff bat | 657 mg |
| Mammal | Eumops perotis | Western mastiff bat / Western bonneted bat / Greater mastiff bat / Greater bonneted bat | 802 mg |
| Reptile | Eunectes notaeus | Yellow anaconda / Paraguayan anaconda | 818 mg |
| Bird | Euneornis campestris | Orangequit | 728 mg |
| Bird | Eunymphicus cornutus | Horned parakeet | 3.52 g |
| Bird | Eunymphicus uvaeensis | Ouvea parakeet / Uvea parakeet | 3.45 g |
| Dinosaur | Euoplocephalus tutus | Euoplocephalus | 41 g |
| Mammal | Euoticus elegantulus | Southern needle-clawed bushbaby | 5.63 g |
| Mammal | Euoticus pallidus | Northern needle-clawed bushbaby | 5.19 g |
| Bird | Euphagus carolinus | Rusty blackbird | 1.56 g |
| Bird | Euphagus cyanocephalus | Brewer’s blackbird | 1.49 g |
| Bird | Euphonia jamaica | Jamaican euphonia | 672 mg |
| Mammal | Euphractus sexcinctus | Six-banded armadillo / Yellow armadillo | 27.4 g |
| Bird | Euplectes orix | Southern red bishop / Red bishop | 789 mg |
| Mammal | Eupleres goudotii | Eastern falanouc | 17 g |
| Amphibian | Euproctus montanus | Corsican brook salamander / Corsican mountain newt | 14.4 mg |
| Bird | Eupsittula aurea | Peach-fronted parakeet / Peach-fronted conure | 3.35 g |
| Bird | Eupsittula canicularis | Orange-fronted parakeet / Orange-fronted conure / Half-moon conure / Petz’s conure | 3.24 g |
| Bird | Eupsittula nana | Olive-throated parakeet / Olive-throated conure | 4.15 g |
| Bird | Eupsittula pertinax | Brown-throated parakeet / St. Thomas conure / Brown-throated conure | 3.62 g |
| Fish | Euristhmus lepturus | Long-tailed catfish | 351 mg |
| Bird | Eurocephalus anguitimens | Southern white-crowned shrike | 1.79 g |
| Bird | Eurostopodus argus | Spotted nightjar / Spotted eared-nightjar | 1.28 g |
| Bird | Eurostopodus mystacalis | White-throated nightjar / White-throated eared-nightjar | 1.38 g |
| Amphibian | Eurycea longicauda | Long-tailed salamander / Longtail salamander | 14.2 mg |
| Amphibian | Eurycea wilderae | Blue Ridge two-lined salamander | 7.8 mg |
| Fish | Eurypharynx pelecanoides | Pelican eel / Gulper eel / Pelican gulper / Umbrella-mouth gulper | 20 mg |
| Bird | Eurypyga helias | Sunbittern | 2.57 g |
| Bird | Eurystomus glaucurus | Broad-billed roller | 1.8 g |
| Bird | Eurystomus orientalis | Oriental dollarbird | 2.05 g |
| Fish | Euthynnus affinis | Mackerel tuna / Eastern little tuna / Wavyback skipjack tuna / Kawakawa | 2.21 g |
| Fish | Euthynnus alletteratus | Little tunny / Little tuna / False albacore / Blue bonito | 3.58 g |
| Fish | Eutrigla gurnardus | Grey gurnar | 754 mg |
| Reptile | Eutropis multifasciata | East Indian brown mabuya / Common sun skink / Many-lined sun skink / Many-striped skink | 163 mg |
| Mammal | Euxerus erythropus | Striped ground squirrel | 6.66 g |
| Fish | Eviota albolineata | Spotted fringefin goby / Whitelined eviota | 1.8 mg |
| Fish | Eviota guttata | Spotted dwarfgoby | 7.27 mg |
| Fish | Eviota monostigma | Singlespot dwarfgoby | 3.67 mg |
| Fish | Eviota prasina | Greenbubble dwarfgoby | 5.06 mg |
| Fish | Exyrias puntang | Puntang goby | 50 mg |
| Bird | Falco berigora | Brown falcon | 6.46 g |
| Bird | Falco biarmicus | Lanner falcon | 6.3 g |
| Bird | Falco cenchroides | Nankeen kestrel / Australian kestrel | 3.25 g |
| Bird | Falco cherrug | Saker falcon | 7.32 g |
| Bird | Falco columbarius | Merlin | 3.1 g |
| Bird | Falco eleonorae | Eleonora’s falcon | 4.18 g |
| Bird | Falco longipennis | Australian hobby / Little falcon | 3.42 g |
| Bird | Falco mexicanus | Prairie falcon | 7.11 g |
| Bird | Falco moluccensis | Spotted kestrel | 3.56 g |
| Bird | Falco naumanni | Lesser kestrel | 2.85 g |
| Bird | Falco peregrinus | Peregrine falcon / Peregrine | 6.6 g |
| Bird | Falco rufigularis | Bat falcon | 3.29 g |
| Bird | Falco rupicoloides | Greater kestrel / White-eyed kestrel | 3.9 g |
| Bird | Falco rusticolus | Gyrfalcon / Gyr | 8.88 g |
| Bird | Falco sparverius | American kestrel / American sparrowhawk | 2.55 g |
| Bird | Falco subbuteo | Eurasian hobby / Hobby | 3.61 g |
| Bird | Falco subniger | Black falcon | 6.73 g |
| Bird | Falco tinnunculus | Common kestrel / European kestrel / Eurasian kestrel / Old World kestrel | 3.73 g |
| Bird | Falco vespertinus | Red-footed falcon / Western red-footed falcon | 2.65 g |
| Bird | Falcunculus frontatus | Eastern shriketit | 1.28 g |
| Fish | Favonigobius lateralis | Southern longfin goby | 16.8 mg |
| Fish | Favonigobius melanobranchus | Blackthroat goby | 29.4 mg |
| Fish | Favonigobius reichei | Indopacific Tropical Sand Goby / Tropical sand goby | 32.9 mg |
| Amphibian | Feihyla palpebralis | Vietnamese bubble-nest frog / White-cheeked small treefrog | 20.6 mg |
| Amphibian | Feirana quadranus | Swelled vent frog | 134 mg |
| Amphibian | Fejervarya limnocharis | Boie’s wart frog / Rice field frog / Asian grass frog | 34.2 mg |
| Amphibian | Fejervarya multistriata | Hong Kong paddy frog / Paddy frog | 34.1 mg |
| Mammal | Felis catus | Cat / Domestic cat / House cat | 25.6 g |
| Mammal | Felis chaus | Jungle cat / Reed cat / Swamp cat | 38.1 g |
| Mammal | Felis lybica | African wildcat | 28.5 g |
| Mammal | Felis nigripes | Black-footed cat / Small-spotted cat | 20.1 g |
| Mammal | Felis silvestris | European wildcat | 28.3 g |
| Bird | Ficedula albicollis | Collared flycatcher | 468 mg |
| Bird | Ficedula hypoleuca | European pied flycatcher | 417 mg |
| Fish | Figaro boardmani | Australian sawtail catshark | 870 mg |
| Fish | Filistriatus plebeius | Striped threadfin / Common threadfin / Northern threadfin / Puttynose | 1.09 g |
| Fish | Fistularia commersonii | Bluespotted cornetfish / Smooth cornetfish / Smooth flutemouth | 700 mg |
| Fish | Fistularia petimba | Red cornetfish / Rough flutemouth | 1.01 g |
| Insect | Flavipanurgus venustus | – | 0.462 mg |
| Bird | Florisuga mellivora | White-necked jacobin / Great jacobin / Collared hummingbird | 269 mg |
| Fish | Foa brachygramma | Weed cardinalfish | 26 mg |
| Fish | Fontitrygon garouaensis | Niger stingray / Smooth freshwater stingray | 3.53 g |
| Fish | Forcipiger flavissimus | Yellow longnose butterflyfish / Forceps butterflyfish | 307 mg |
| Fish | Forcipiger longirostris | Longnose butterflyfish / Big longnose butterflyfish | 336 mg |
| Insect | Formica fusca | Silky ant / Dusky ant | 0.168 mg |
| Insect | Formica subsericea | Black field ant | 0.049 mg |
| Bird | Formicarius analis | Black-faced antthrush | 1.35 g |
| Bird | Formicarius colma | Rufous-capped antthrush | 1.12 g |
| Bird | Formicivora grisea | Southern white-fringed antwren | 468 mg |
| Bird | Forpus coelestis | Pacific parrotlet / Lesson’s parrotlet / Celestial parrotlet | 1.39 g |
| Bird | Forpus conspicillatus | Spectacled parrotlet / Cauca spectacled parrotlet / Venezuelan spectacled parrotlet | 1.24 g |
| Bird | Forpus cyanopygius | Mexican parrotlet / Turquoise-rumped parrotlet / Mexican blue-rumped parrotlet | 1.33 g |
| Bird | Forpus passerinus | Green-rumped parrotlet / Green-rumped parakeet | 1.17 g |
| Mammal | Fossa fossana | Malagasy / Striped civet / Fanaloka / Jabady | 19.7 g |
| Bird | Foudia madagascariensis | Red fody / Common fody / Madagascar fody / Red cardinal fody | 779 mg |
| Bird | Foulehaio carunculatus | Polynesian wattled honeyeater / Eastern wattled honeyeater | 1.02 g |
| Fish | Fowleria aurita | Crosseyed cardinalfish | 27 mg |
| Fish | Fowleria punctulata | Spotcheek cardinalfish | 55 mg |
| Bird | Fratercula arctica | Atlantic puffin / Common puffin | 3.85 g |
| Bird | Fratercula cirrhata | Tufted puffin / Crested puffin | 6.01 g |
| Bird | Fratercula corniculata | Horned puffin | 5.38 g |
| Bird | Fregata aquila | Ascension frigatebird | 9.45 g |
| Bird | Fregata magnificens | Magnificent frigatebird / Frigate petrel / Man o’ war | 9.65 g |
| Bird | Fregata minor | Great frigatebird | 9.56 g |
| Bird | Fregetta grallaria | White-bellied storm petrel | 932 mg |
| Bird | Fringilla coelebs | Eurasian chaffinch / Common chaffinch | 802 mg |
| Bird | Fringilla montifringilla | Brambling / Cock o’ the north / Mountain finch | 748 mg |
| Bird | Fulica americana | American coot / Mud hen / Pouldeau | 2.97 g |
| Bird | Fulica atra | Eurasian coot / Common coot / Australian coot | 3.06 g |
| Bird | Fulmarus glacialis | Northern fulmar / Arctic fulmar / Fulmar | 6.68 g |
| Bird | Fulmarus glacialoides | Southern fulmar / Antarctic fulmar / Silver-grey fulmar | 7.73 g |
| Mammal | Funambulus pennantii | Northern palm squirrel / Five-striped palm squirrel | 2.1 g |
| Mammal | Funisciurus anerythrus | Thomas’s rope squirrel / Redless tree squirrel | 4.14 g |
| Mammal | Funisciurus carruthersi | Carruther’s mountain squirrel | 4.48 g |
| Mammal | Funisciurus pyrropus | Fire-footed rope squirrel | 4.38 g |
| Reptile | Furcifer lateralis | Carpet chameleon / Jewel chameleon / White-lined chameleon | 61.5 mg |
| Reptile | Furcifer oustaleti | Malagasy giant chameleon / Oustalet’s chameleon | 265 mg |
| Mammal | Furipterus horrens | Thumbless bat | 127 mg |
| Bird | Furnarius rufus | Rufous hornero / Red ovenbird | 1.36 g |
| Fish | Gadiculus argenteus | Silvery pout | 135 mg |
| Fish | Gadus chalcogrammus | Alaska pollock / Pacific pollock / Walleye pollock | 759 mg |
| Fish | Gadus macrocephalus | Pacific cod / Gray cod / Grey cod / Grayfish | 1.67 g |
| Fish | Gadus morhua | Atlantic cod | 3.35 g |
| Fish | Gadus ogac | Greenland cod / Ogac | 1.4 g |
| Fish | Gaidropsarus argentatus | Arctic rockling / Silver rockling / Arctic threebeard | 201 mg |
| Fish | Gaidropsarus ensis | Threadfin rockling | 173 mg |
| Fish | Gaidropsarus mediterraneus | Shore rockling | 508 mg |
| Fish | Gaidropsarus vulgaris | Three-bearded rockling | 338 mg |
| Mammal | Galago matschiei | Dusky bushbaby / Matschie’s galago | 4.62 g |
| Mammal | Galago moholi | Mohol bushbaby | 3.75 g |
| Mammal | Galago senegalensis | Senegal bushbaby / Senegal galago / Lesser galago / Lesser bush baby | 4.97 g |
| Mammal | Galagoides demidovii | Prince Demidoff’s bushbaby / Prince Demidoff’s galago | 3.05 g |
| Mammal | Galagoides thomasi | Thomas’s bushbaby | 3.12 g |
| Bird | Galbula albirostris | Yellow-billed jacamar | 632 mg |
| Bird | Galbula galbula | Green-tailed jacamar | 600 mg |
| Mammal | Galea musteloides | Common yellow-toothed cavy | 2.72 g |
| Mammal | Galea spixii | Spix’s yellow-toothed cavy | 6.5 g |
| Mammal | Galemys pyrenaicus | Pyrenean desman / Iberian desman / Trumpet rat | 1.26 g |
| Fish | Galeocerdo cuvier | Tiger shark | 66.2 g |
| Fish | Galeorhinus galeus | School shark / Tope / Tope shark / Snapper shark | 10.4 g |
| Bird | Galerida cristata | Crested lark | 1.12 g |
| Bird | Galerida theklae | Thekla’s lark / Thekla lark | 920 mg |
| Fish | Galeus melastomus | Blackmouth catshark | 2.54 g |
| Fish | Galeus polli | African sawtail catshark | 760 mg |
| Mammal | Galictis cuja | Lesser grison | 19.1 g |
| Mammal | Galictis vittata | Greater grison | 19.2 g |
| Mammal | Galidia elegans | Ring-tailed vontsira / Ring-tailed mongoose | 10.7 g |
| Bird | Gallicolumba crinigera | Mindanao bleeding-heart / Bartlett’s bleeding heart dove / Barlett’s bleeding heart pigeon / Hair-breasted bleeding heart | 1.5 g |
| Bird | Gallicolumba luzonica | Luzon bleeding-heart / Bleeding-heart dove / Bleeding-heart pigeon / Punay | 1.42 g |
| Bird | Gallicolumba tristigmata | Sulawesi ground dove / Yellow-breasted ground dove | 1.61 g |
| Bird | Gallicrex cinerea | Watercock | 2.65 g |
| Bird | Gallinago gallinago | Common snipe | 1.38 g |
| Bird | Gallinago hardwickii | Latham’s snipe / Japanese snipe | 2.04 g |
| Bird | Gallinago media | Great snipe | 1.97 g |
| Bird | Gallinago nobilis | Noble snipe | 2.21 g |
| Bird | Gallinago stenura | Pin-tailed snipe / Pintail snipe | 1.55 g |
| Bird | Gallinago undulata | Giant snipe | 2.99 g |
| Bird | Gallinula chloropus | Common moorhen / Waterhen | 2.12 g |
| Bird | Gallinula tenebrosa | Dusky moorhen | 2.81 g |
| Bird | Gallirallus australis | Weka / Māori hen / Woodhen | 5.2 g |
| Bird | Gallirallus owstoni | Guam rail | 2.23 g |
| Bird | Gallirallus philippensis | Buff-banded rail / Tikling / Banded rail | 2.04 g |
| Bird | Galloperdix spadicea | Red spurfowl | 2 g |
| Reptile | Gallotia galloti | Gallot’s lizard / Tenerife lizard / Western Canaries lizard | 164 mg |
| Reptile | Gallotia stehlini | Gran Canaria giant lizard | 404 mg |
| Bird | Gallus gallus | Red junglefowl / Indian red junglefowl / Chicken / Bankiva | 3.59 g |
| Bird | Gallus sonneratii | Grey junglefowl / Sonnerat’s junglefowl | 3.32 g |
| Bird | Gallus varius | Green junglefowl / Javan junglefowl / Forktail / Green Javanese junglefowl | 3.23 g |
| Mammal | Gardnerycteris crenulatum | Striped hairy-nosed bat | 337 mg |
| Bird | Garritornis isidorei | Papuan babbler / New Guinea babbler / Isidore’s rufous babbler | 2.26 g |
| Bird | Garrulax leucolophus | White-crested laughingthrush | 2.55 g |
| Bird | Garrulus glandarius | Eurasian jay | 4.06 g |
| Fish | Gasterosteus aculeatus | Three-spined stickleback | 30.9 mg |
| Bird | Gavia arctica | Black-throated loon / Arctic loon / Black-throated diver | 7.5 g |
| Bird | Gavia immer | Common loon / Great northern diver | 11.7 g |
| Bird | Gavia pacifica | Pacific loon / Pacific diver | 6.31 g |
| Bird | Gavia stellata | Red-throated loon / Red-throated diver | 6 g |
| Bird | Gavicalis virescens | Singing honeyeater | 952 mg |
| Mammal | Gazella dorcas | Dorcas gazelle / Ariel gazelle | 76.2 g |
| Reptile | Gehyra australis | Australian house gecko / Northern dtella / Top-end dtella | 33.2 mg |
| Reptile | Gehyra mutilata | Common four-clawed gecko / Pacific gecko / Stump-toed gecko / Sugar gecko | 34.1 mg |
| Reptile | Gehyra oceanica | Oceania gecko / Pacific dtella | 97.3 mg |
| Reptile | Gehyra punctata | Spotted dtella / Spotted gecko | 25.9 mg |
| Reptile | Gehyra variegata | Tree dtella / Variegated dtella / Varied dtella | 47.4 mg |
| Reptile | Gehyra vorax | Voracious four-clawed gecko / Voracious dtella | 179 mg |
| Reptile | Gekko gecko | Tokay gecko | 217 mg |
| Reptile | Gekko kuhli | Kuhl’s flying gecko / Kuhl’s parachute gecko / Gliding gecko | 106 mg |
| Reptile | Gekko vittatus | Lined gecko / Skunk gecko | 100 mg |
| Bird | Gelochelidon nilotica | Gull-billed tern | 1.97 g |
| Mammal | Genetta angolensis | Angolan genet / Miombo genet | 15.5 g |
| Mammal | Genetta genetta | Common genet | 14 g |
| Mammal | Genetta pardina | Pardine genet / West African large spotted genet | 15.4 g |
| Mammal | Genetta servalina | Servaline genet | 16 g |
| Mammal | Genetta tigrina | Cape genet / South African large-spotted genet | 15.5 g |
| Fish | Genicanthus caudovittatus | Zebra angelfish / Swallowtail angelfish / Lyretail angelfish | 332 mg |
| Mammal | Geocapromys ingrahami | Bahamian hutia / Ingraham’s hutia | 4.46 g |
| Bird | Geococcyx californianus | Greater roadrunner / Chaparral cock / Ground cuckoo / Snake killer | 3.61 g |
| Bird | Geococcyx velox | Lesser roadrunner | 2.77 g |
| Bird | Geoffroyus geoffroyi | Red-cheeked parrot | 4.41 g |
| Mammal | Geomys breviceps | Baird’s pocket gopher / Louisiana pocket gopher | 2 g |
| Mammal | Geomys bursarius | Plains pocket gopher | 1.71 g |
| Mammal | Geomys pinetis | Southeastern pocket gopher | 2.51 g |
| Bird | Geopelia cuneata | Diamond dove | 647 mg |
| Bird | Geopelia humeralis | Bar-shouldered dove | 1.31 g |
| Bird | Geopelia placida | Peaceful dove | 818 mg |
| Bird | Geopelia striata | Zebra dove / Barred ground dove / Barred dove | 818 mg |
| Bird | Geophaps plumifera | Spinifex pigeon / Plumed-pigeon / Gannaway pigeon | 1.22 g |
| Bird | Geophaps smithii | Partridge pigeon | 1.44 g |
| Mammal | Georychus capensis | Cape mole-rat | 1.04 g |
| Mammal | Geosciurus inauris | Cape ground squirrel / South African ground squirrel / Fan-tailed squirrel | 7.65 g |
| Bird | Geositta cunicularia | Common miner | 1 g |
| Bird | Geothlypis trichas | Common yellowthroat | 504 mg |
| Fish | Geotria australis | Pouched lamprey / Wide-mouthed lamprey / Piharau / Korokoro | 28 mg |
| Bird | Geotrygon chrysia | Key West quail-dove | 1.36 g |
| Bird | Geotrygon montana | Ruddy quail-dove | 1.18 g |
| Bird | Geotrygon violacea | Violaceous quail-dove | 1.09 g |
| Bird | Geranoaetus albicaudatus | White-tailed hawk | 15 g |
| Bird | Geranoaetus polyosoma | Variable hawk / Red-backed hawk | 9.1 g |
| Bird | Geranospiza caerulescens | Crane hawk | 5.8 g |
| Mammal | Gerbilliscus afra | Cape gerbil | 1.56 g |
| Mammal | Gerbilliscus brantsii | Highveld gerbil | 1.56 g |
| Mammal | Gerbillurus paeba | Hairy-footed gerbil | 840 mg |
| Mammal | Gerbillus gerbillus | Lesser Egyptian gerbil | 3.4 g |
| Mammal | Gerbillus gleadowi | Indian hairy-footed gerbil | 690 mg |
| Mammal | Gerbillus nanus | Balochistan gerbil / Dwarf gerbil | 600 mg |
| Mammal | Gerbillus pyramidum | Greater Egyptian gerbil | 920 mg |
| Bird | Geronticus calvus | Southern bald ibis | 9 g |
| Bird | Geronticus eremita | Northern bald ibis / Hermit ibis / Waldrapp | 8.2 g |
| Fish | Gerres cinereus | Yellowfin mojarra | 482 mg |
| Fish | Gerres filamentosus | Whipfin silver-biddy / Flagfin mojarra / Threadfin silver belly | 215 mg |
| Fish | Gerres oyena | Common silver-biddy / Blacktip silver biddy / Darnley Island silverbelly / Longtail silverbiddy | 203 mg |
| Reptile | Gerrhosaurus flavigularis | Yellow-throated plated lizard / Plated lizard | 229 mg |
| Reptile | Gerrhosaurus nigrolineatus | Black-lined plated lizard | 501 mg |
| Bird | Gerygone chloronota | Green-backed gerygone | 373 mg |
| Bird | Gerygone flavolateralis | Fan-tailed gerygone | 352 mg |
| Bird | Gerygone fusca | Western gerygone | 352 mg |
| Bird | Gerygone hypoxantha | Biak gerygone | 430 mg |
| Bird | Gerygone magnirostris | Large-billed gerygone | 433 mg |
| Fish | Gillichthys mirabilis | Longjaw mudsucker | 90.2 mg |
| Fish | Ginglymostoma cirratum | Nurse shark | 31.7 g |
| Mammal | Giraffa camelopardalis | Northern giraffe / Three-horned giraffe | 694 g |
| Fish | Giuris margaritaceus | Snakehead gudgeon / Aporos sleeper / Ornate sleeper | 108 mg |
| Fish | Gladiogobius ensifer | Gladiator goby | 10.7 mg |
| Reptile | Glaphyromorphus fuscicaudis | Brown-tailed bar-lipped skink / Grey-tailed skink | 51.2 mg |
| Reptile | Glaphyromorphus nigricaudis | Black-tailed bar-lipped skink | 52.4 mg |
| Bird | Glareola isabella | Australian pratincole / Arnhem Land grouse / Australian courser | 1.09 g |
| Bird | Glareola nuchalis | Rock pratincole | 881 mg |
| Bird | Glaucestrilda caerulescens | Lavender waxbill | 425 mg |
| Bird | Glaucidium albertinum | Albertine owlet / Prigogine’s owlet | 2.68 g |
| Bird | Glaucidium brasilianum | Ferruginous pygmy owl | 2.6 g |
| Bird | Glaucidium gnoma | Mountain pygmy owl / Northern pygmy owl | 3.73 g |
| Bird | Glaucidium minutissimum | East Brazilian pygmy owl / Least pygmy-owl / Sick’s pygmy-owl | 2.8 g |
| Bird | Glaucidium passerinum | Eurasian pygmy owl | 2.73 g |
| Bird | Glaucis hirsutus | Rufous-breasted hermit / Hairy hermit | 233 mg |
| Mammal | Glaucomys sabrinus | Northern flying squirrel | 3.01 g |
| Mammal | Glaucomys volans | Southern flying squirrel / Assapan | 1.78 g |
| Mammal | Glauconycteris beatrix | Beatrix’s bat | 144 mg |
| Mammal | Glauconycteris poensis | Abo bat | 205 mg |
| Fish | Glaucosoma scapulare | Pearl perch | 730 mg |
| Fish | Glaucostegus typus | Common shovelnose ray / Giant shovelnose ray / Giant guitarfish | 13.2 g |
| Bird | Gliciphila melanops | Tawny-crowned honeyeater | 641 mg |
| Mammal | Glis glis | European edible dormouse / European dormouse / European fat dormouse | 1.84 g |
| Mammal | Glischropus tylopus | Common thick-thumbed bat | 99 mg |
| Mammal | Globicephala macrorhynchus | Short-finned pilot whale | 3.09 kg |
| Mammal | Globicephala melas | Long-finned pilot whale / Pothead whale | 2.78 kg |
| Fish | Glossogobius callidus | – | 48.9 mg |
| Fish | Glossogobius circumspectus | Circumspect goby | 16 mg |
| Fish | Glossogobius giuris | Tank goby / Bar-eyed goby / Flat-headed goby / Gangetic tank goby | 330 mg |
| Mammal | Glossophaga longirostris | Miller’s long-tongued bat | 435 mg |
| Mammal | Glossophaga soricina | Pallas’s long-tongued bat | 403 mg |
| Amphibian | Glyphoglossus yunnanensis | Yunnan squat frog / Yunnan small narrow-mouthed frog | 19.5 mg |
| Bird | Glyphorynchus spirurus | Wedge-billed woodcreeper | 641 mg |
| Fish | Gnathochromis permaxillaris | – | 137 mg |
| Fish | Gnathodentex aureolineatus | Goldspot seabream / Striped large-eye bream | 707 mg |
| Fish | Gnatholepis anjerensis | Eyebar goby | 21.6 mg |
| Fish | Gnathonemus echidnorhynchus | Blunt-jawed elephantnose | 266 mg |
| Fish | Gnathonemus longibarbis | Longnose stonebasher | 1.31 g |
| Fish | Gnathonemus petersii | Peters’s elephant-nose fish / Elephantnose fish / Long-nosed elephant fish / Ubangi mormyrid | 530 mg |
| Bird | Gnorimopsar chopi | Chopi blackbird | 1.86 g |
| Reptile | Gnypetoscincus queenslandiae | Prickly skink / Prickly forest skink | 43.2 mg |
| Fish | Gobio gobio | Common gudgeon | 159 mg |
| Fish | Gobioclinus bucciferus | Puffcheek blenny | 46.4 mg |
| Fish | Gobiodon citrinus | Poison goby | 16.1 mg |
| Fish | Gobiodon erythrospilus | Blue-spotted coral goby | 20 mg |
| Fish | Gobiodon rivulatus | Rippled coral goby | 19.9 mg |
| Fish | Gobiomorphus australis | Striped gudgeon | 57.7 mg |
| Fish | Gobiomorphus coxii | Cox’s gudgeon | 38.8 mg |
| Fish | Gobiomorus dormitor | Bigmouth sleeper | 381 mg |
| Fish | Gobionellus oceanicus | Highfin goby | 56.2 mg |
| Fish | Gobionotothen acuta | Triangular rockcod / Triangular notothen | 287 mg |
| Fish | Gobiopsis macrostoma | Longjaw goby / Lockjaw goby | 3.2 mg |
| Fish | Gobiopsis malekulae | Striped barbelgoby | 2.07 mg |
| Fish | Gobiopterus chuno | – | 3.04 mg |
| Fish | Gobiopterus semivestitus | – | 2.6 mg |
| Fish | Gobiosoma paradoxum | Paradox goby | 4.72 mg |
| Fish | Gobius cobitis | Giant goby | 162 mg |
| Fish | Gobius couchi | Couch’s goby | 78.5 mg |
| Fish | Gobius niger | Black goby | 46.1 mg |
| Fish | Gobius paganellus | Rock goby | 47.1 mg |
| Fish | Gollum attenuatus | Slender smooth-hound / Gollumshark | 2.78 g |
| Fish | Gomphosus caeruleus | Green birdmouth wrasse | 257 mg |
| Fish | Gomphosus varius | Bird wrasse | 333 mg |
| Reptile | Goniurosaurus lichtenfelderi | Lichtenfelder’s gecko | 102 mg |
| Reptile | Goniurosaurus luii | – | 155 mg |
| Mammal | Gorilla beringei | Eastern gorilla | 491 g |
| Mammal | Gorilla gorilla | Western gorilla | 459 g |
| Bird | Goura cristata | Western crowned pigeon / Common crowned pigeon / Blue crowned pigeon | 5.48 g |
| Bird | Goura scheepmakeri | Scheepmaker’s crowned pigeon | 5.96 g |
| Bird | Goura victoria | Victoria crowned pigeon | 5.63 g |
| Amphibian | Gracixalus gracilipes | Chapa bubble-nest frog / Black eye-lidded small tree frog / Yellow and black-spotted tree frog / Slender-legged bush frog | 11.8 mg |
| Amphibian | Gracixalus jinxiuensis | Jinxiu bubble-nest frog / Jinxiu small treefrog | 15.5 mg |
| Bird | Gracula religiosa | Common hill myna / Hill myna /Myna bird | 3.81 g |
| Bird | Grallaria quitensis | Tawny antpitta / Western tawny antpitta | 2.12 g |
| Bird | Grallina bruijnii | Torrent-lark | 1.04 g |
| Bird | Grallina cyanoleuca | Magpie-lark / Wee magpie / Murray magpie / Peewee | 1.74 g |
| Fish | Gramma loreto | Royal gramma / Fairy basslet | 30.4 mg |
| Fish | Grammatorcynus bilineatus | Double-lined mackerel / Scad mackerel | 1.97 g |
| Fish | Grammatotria lemairii | – | 162 mg |
| Fish | Grammistes sexlineatus | Goldenstriped soapfish / Lined soapfish / Golden-striped bass / Radio fish | 99 mg |
| Mammal | Grammomys cometes | Mozambique thicket rat | 960 mg |
| Mammal | Grammomys dolichurus | Woodland thicket rat | 840 mg |
| Mammal | Grammomys poensis | Shining thicket rat | 1.26 g |
| Mammal | Grampus griseus | Risso’s dolphin | 2.47 kg |
| Bird | Grantiella picta | Painted honeyeater | 725 mg |
| Mammal | Graphiurus murinus | Woodland dormouse / African dormouse / African dwarf dormouse / African pygmy dormouse | 414 mg |
| Bird | Graydidascalus brachyurus | Short-tailed parrot | 5.49 g |
| Fish | Greenwoodochromis christyi | – | 111 mg |
| Bird | Grus grus | Common crane / Eurasian crane | 19.1 g |
| Bird | Grus japonensis | Red-crowned crane / Japanese crane / Manchurian crane | 20.7 g |
| Bird | Grus paradisea | Blue crane / Stanley crane / Paradise crane | 13.3 g |
| Bird | Grus virgo | Demoiselle crane | 10 g |
| Bird | Guaruba guarouba | Golden parakeet / Golden conure / Queen of Bavaria conure | 7.75 g |
| Bird | Guira guira | Guira cuckoo / Pirincho | 1.96 g |
| Mammal | Gulo gulo | Wolverine / Carcajou / Quickhatch | 75.4 g |
| Fish | Gunnellichthys monostigma | Onespot wormfish | 5.5 mg |
| Bird | Guttera pucherani | Eastern crested guinea fowl | 4.63 g |
| Bird | Gygis alba | Atlantic white tern / Angel tern / White noddy | 2 g |
| Fish | Gymnarchus niloticus | Aba / Aba aba / Frankfish | 264 mg |
| Bird | Gymnasio nudipes | Puerto Rican owl / Múcaro común / Puerto Rican screech owl | 3.84 g |
| Mammal | Gymnobelideus leadbeateri | Leadbeater’s possum / Fairy possum | 2.9 g |
| Bird | Gymnobucco calvus | Naked-faced barbet | 1.3 g |
| Fish | Gymnocanthus tricuspis | Arctic staghorn sculpin | 97 mg |
| Bird | Gymnocichla nudiceps | Bare-crowned antbird | 1.1 g |
| Fish | Gymnocranius euanus | Japanese large-eye bream / Japanese sea bream / Paddletail bream / Speckled emperor | 2.37 g |
| Fish | Gymnocranius grandoculis | Blue-lined large-eye bream / Iodine bream / Maori sea bream / Robinson’s sea bream | 1.89 g |
| Fish | Gymnocranius griseus | Grey large-eye bream / Barred large-eye bream / Grey emperor / Grey seabream | 441 mg |
| Bird | Gymnoderus foetidus | Bare-necked fruitcrow | 3.66 g |
| Fish | Gymnogobius castaneus | Biringo | 20.8 mg |
| Fish | Gymnogobius cylindricus | – | 11.5 mg |
| Fish | Gymnogobius heptacanthus | – | 13.2 mg |
| Fish | Gymnogobius isaza | – | 21.5 mg |
| Fish | Gymnogobius macrognathos | – | 3.66 mg |
| Fish | Gymnogobius uchidai | – | 7.22 mg |
| Fish | Gymnogobius urotaenia | – | 29.3 mg |
| Bird | Gymnogyps californianus | California condor | 28.2 g |
| Bird | Gymnophaps albertisii | Papuan mountain pigeon | 2.18 g |
| Bird | Gymnopithys leucaspis | White-cheeked antbird | 789 mg |
| Bird | Gymnorhina tibicen | Australian magpie | 4.77 g |
| Bird | Gymnorhinus cyanocephalus | Pinyon jay | 3.29 g |
| Fish | Gymnosarda unicolor | Dogtooth tuna / White tuna | 4.07 g |
| Fish | Gymnothorax buroensis | Latticetail moray / Vagrant moray / Buru moray eel / Buro moray | 131 mg |
| Fish | Gymnothorax eurostus | Abbott’s moray eel / Stout moray | 99 mg |
| Fish | Gymnothorax favagineus | Laced moray / Leopard moray / Leopard moray eel / Tessellate moray | 165 mg |
| Fish | Gymnothorax flavimarginatus | Yellow-edged moray / Yellow-margined moray / Leopard moray / Speckled moray | 259 mg |
| Fish | Gymnothorax funebris | Green moray | 510 mg |
| Fish | Gymnothorax gracilicauda | Slendertail moray eel / Graceful-tailed moray | 31 mg |
| Fish | Gymnothorax griseus | Geometric moray | 72 mg |
| Fish | Gymnothorax javanicus | Giant moray | 511 mg |
| Fish | Gymnothorax margaritophorus | Blotch-necked moray eel / Blackpearl moray / Pearly moray / Pearly reef-eel | 136 mg |
| Fish | Gymnothorax melatremus | Blackspot moray / Dirty yellow moray / Dwarf moray | 9 mg |
| Fish | Gymnothorax meleagris | Turkey moray / Guineafowl moray / White-mouth moray / Whitemouth moray | 686 mg |
| Fish | Gymnothorax pictus | Painted moray / Paintspotted moray / Peppered moray | 202 mg |
| Fish | Gymnothorax pindae | Pinda moray | 134 mg |
| Fish | Gymnothorax rueppelliae | Banded moray / Banded reef-eel / Rüppell’s moray / Rüppell’s moray eel | 52 mg |
| Fish | Gymnothorax undulatus | Undulated moray | 306 mg |
| Fish | Gymnothorax zonipectis | Barred-fin moray / Bar-tail moray | 32 mg |
| Fish | Gymnotus carapo | Banded knifefish | 166 mg |
| Fish | Gymnura australis | Australian butterfly ray | 3.79 g |
| Bird | Gypaetus barbatus | Bearded vulture / Lammergeier / Ossifrage | 23.7 g |
| Bird | Gypohierax angolensis | Palm-nut vulture / Vulturine fish eagle | 10.2 g |
| Bird | Gyps africanus | White-backed vulture | 19.4 g |
| Bird | Gyps bengalensis | White-rumped vulture / Oriental white-backed vulture | 19 g |
| Bird | Gyps coprotheres | Cape vulture / Cape griffon / Kolbe’s vulture | 19 g |
| Bird | Gyps fulvus | Eurasian griffon vulture / Eurasian griffon / Griffon vulture | 26 g |
| Bird | Gyps himalayensis | Himalayan vulture / Himalayan griffon vulture | 28 g |
| Mammal | Habromys lepturus | Zempoaltepec deer mouse / Slender-tailed deer mouse | 700 mg |
| Bird | Haematopus ater | Blackish oystercatcher | 5.34 g |
| Bird | Haematopus bachmani | Black oystercatcher | 4.68 g |
| Bird | Haematopus fuliginosus | Sooty oystercatcher | 5.4 g |
| Bird | Haematopus leucopodus | Magellanic oystercatcher | 4.71 g |
| Bird | Haematopus longirostris | Pied oystercatcher | 4.48 g |
| Bird | Haematopus ostralegus | Eurasian oystercatcher / Common pied oystercatcher / Oystercatcher | 4.17 g |
| Bird | Haematopus palliatus | American oystercatcher / American pied oystercatcher | 4.68 g |
| Bird | Haemorhous mexicanus | House finch | 809 mg |
| Bird | Haemorhous purpureus | Purple finch | 904 mg |
| Fish | Haemulon carbonarium | Caesar grunt / Black grunt / Blacktail grunt / Redmouth grunt | 694 mg |
| Fish | Haemulon flavolineatum | French grunt / Banana grunt / Gold laced grunt / Open-mouthed grunt | 474 mg |
| Fish | Haemulon plumierii | White grunt / Common grunt | 565 mg |
| Fish | Halargyreus johnsonii | Slender codling / Slender cod | 248 mg |
| Bird | Halcyon leucocephala | Grey-headed kingfisher | 1.12 g |
| Bird | Halcyon senegalensis | Woodland kingfisher | 1.5 g |
| Bird | Halcyon smyrnensis | White-throated kingfisher / White-breasted kingfisher | 1.85 g |
| Bird | Haliaeetus albicilla | White-tailed eagle / White-tailed sea-eagle / Gray sea eagle / Eurasian sea eagle | 18.5 g |
| Bird | Haliaeetus leucocephalus | Bald eagle | 18.5 g |
| Bird | Haliastur indus | Brahminy kite / Red-backed sea-eagle | 6.37 g |
| Bird | Haliastur sphenurus | Whistling kite / Whistling eagle / Whistling hawk | 6.85 g |
| Fish | Halichoeres biocellatus | Red-lined wrasse / Two-spotted wrasse / Biocellated wrasse | 79 mg |
| Fish | Halichoeres bivittatus | Slippery dick | 117 mg |
| Fish | Halichoeres garnoti | Yellowhead wrasse | 167 mg |
| Fish | Halichoeres hortulanus | Checkerboard wrasse | 303 mg |
| Fish | Halichoeres maculipinna | Clown wrasse | 64 mg |
| Fish | Halichoeres margaritaceus | Pink-belly wrasse | 61.7 mg |
| Fish | Halichoeres marginatus | Dusky wrasse / Splendid rainbow wrasse / Two-eyed wrasse | 142 mg |
| Fish | Halichoeres melanurus | Tail-spot wrasse | 77.6 mg |
| Fish | Halichoeres nigrescens | Bubble-fin wrasse | 98.6 mg |
| Fish | Halichoeres ornatissimus | Ornamented wrasse | 94 mg |
| Fish | Halichoeres poeyi | Black-ear wrasse | 112 mg |
| Fish | Halichoeres trimaculatus | Three-spot wrasse | 62 mg |
| Mammal | Halichoerus grypus | Grey seal / Gray seal / Horsehead seal | 312 g |
| Insect | Halictus confusus | Southern bronze furrow bee / Confused sweat bee | 0.418 mg |
| Insect | Halictus ligatus | Ligated furrow bee | 0.654 mg |
| Insect | Halictus rubicundus | Orange-legged furrow bee | 0.905 mg |
| Fish | Halimuraena hexagonata | – | 17.5 mg |
| Fish | Haliophis guttatus | African eel blenny | 14.6 mg |
| Bird | Halobaena caerulea | Blue petrel | 2.87 g |
| Bird | Hamirostra melanosternon | Black-breasted buzzard | 10.7 g |
| Mammal | Hapalemur alaotrensis | Lac Alaotra bamboo lemur / Lac Alaotra gentle lemur / Alaotran bamboo lemur / Alaotran gentle lemur | 13.8 g |
| Mammal | Hapalemur griseus | Eastern lesser bamboo lemur / Gray bamboo lemur / Gray gentle lemur / Mahajanga lemur | 14.4 g |
| Mammal | Hapalemur occidentalis | Western lesser bamboo lemur / Northern bamboo lemur / Western gentle lemur / Sambirano lesser bamboo lemur | 14.2 g |
| Mammal | Hapalemur simus | Greater bamboo lemur / Broad-nosed bamboo lemur / Broad-nosed gentle lemur | 18.3 g |
| Fish | Haplotaxodon microlepis | – | 222 mg |
| Bird | Harpactes ardens | Philippine trogon | 1.83 g |
| Bird | Harpactes erythrocephalus | Red-headed trogon | 1.99 g |
| Bird | Harpagus bidentatus | Double-toothed kite | 3.97 g |
| Bird | Harpia harpyja | Harpy eagle / American harpy eagle | 19.4 g |
| Mammal | Harpiocephalus harpia | Lesser hairy-winged bat | 442 mg |
| Fish | Harriotta raleighana | Narrownose chimaera | 3.09 g |
| Mammal | Helarctos malayanus | Sun bear | 375 g |
| Fish | Helicolenus dactylopterus | Blackbelly rosefish / Bluemouth rockfish / Bluemouth seaperch | 466 mg |
| Insect | Heliconius erato | Red postman / Small postman / Red passion flower butterfly / Crimson-patched longwing | 0.642 mg |
| Insect | Heliconius himera | – | 0.616 mg |
| Mammal | Heliophobius argenteocinereus | Silvery mole-rat / Silvery blesmol / Silky mole-rat | 1.42 g |
| Bird | Heliornis fulica | Sungrebe / American finfoot | 1.4 g |
| Mammal | Heliosciurus gambianus | Gambian sun squirrel | 3.99 g |
| Mammal | Heliosciurus rufobrachium | Red-legged sun squirrel / Isabelline red-legged sun squirrel | 5.75 g |
| Mammal | Heliosciurus ruwenzorii | Ruwenzori sun squirrel | 5.4 g |
| Bird | Heliothryx barroti | Purple-crowned fairy | 240 mg |
| Bird | Helmitheros vermivorum | Worm-eating warbler | 611 mg |
| Reptile | Heloderma exasperatum | Rio Fuerte beaded lizard | 931 mg |
| Reptile | Heloderma suspectum | Gila monster | 729 mg |
| Mammal | Helogale parvula | Common dwarf mongoose | 4.78 g |
| Fish | Hemibates stenosoma | – | 304 mg |
| Mammal | Hemibelideus lemuroides | Lemuroid ringtail possum / Lemur-like ringtail possum / Brushy-tailed ringtail | 3.21 g |
| Mammal | Hemicentetes semispinosus | Lowland streaked tenrec | 774 mg |
| Fish | Hemichromis bimaculatus | African jewelfish / Jewel cichlid | 80 mg |
| Reptile | Hemidactylus brookii | Brooke’s house gecko / Spotted house gecko | 43 mg |
| Reptile | Hemidactylus frenatus | Common house gecko / Asian house gecko / Pacific house gecko / Wall gecko | 34.1 mg |
| Reptile | Hemidactylus mabouia | Tropical house gecko / Cosmopolitan house gecko | 33 mg |
| Reptile | Hemidactylus turcicus | Mediterranean house gecko / Turkish gecko / Moon lizard | 24.6 mg |
| Mammal | Hemiechinus auritus | Long-eared hedgehog | 1.72 g |
| Reptile | Hemiergis peronii | Four-toed earless skink / Péron’s earless skink / Lowlands earless skink / Four-toed mulch skink | 10.5 mg |
| Fish | Hemigaleus australiensis | Australian weasel shark | 5.17 g |
| Fish | Hemigaleus microstoma | Sicklefin weasel shark | 5.17 g |
| Mammal | Hemigalus derbyanus | Banded palm civet / Banded civet | 18.9 g |
| Fish | Hemigymnus fasciatus | Barred thicklip wrasse | 528 mg |
| Fish | Hemigymnus melapterus | Blackeye thicklip wrasse / Half-and-half wrasse | 432 mg |
| Bird | Hemiphaga novaeseelandiae | Kererū / Kūkupa / New Zealand pigeon / Wood pigeon | 3.08 g |
| Reptile | Hemiphyllodactylus typus | Indopacific tree gecko / Indopacific slender gecko / Common dwarf gecko | 9.31 mg |
| Bird | Hemiprocne mystacea | Moustached treeswift | 1.14 g |
| Fish | Hemiramphus far | Black-barred halfbeak / Black-barred garfish / Barred halfbeak / Barred garfish | 182 mg |
| Fish | Hemiramphus lutkei | Lutke’s halfbeak | 451 mg |
| Fish | Hemiscyllium ocellatum | Epaulette shark | 1.96 g |
| Amphibian | Hemisus guineensis | Guinea snout-burrower / Guinea shovelnose frog | 36.1 mg |
| Fish | Hemitaurichthys polylepis | Pyramid butterflyfish | 252 mg |
| Reptile | Hemitheconyx caudicinctus | African fat-tailed gecko / Fat-tail gecko | 145 mg |
| Bird | Hemithraupis guira | Guira tanager | 590 mg |
| Mammal | Hemitragus jemlahicus | Himalayan tahr | 166 g |
| Bird | Hemitriccus margaritaceiventer | Pearly-vented tody-tyrant | 468 mg |
| Fish | Hemitrygon fluviorum | Estuary stingray / Estuary stingaree / Brown stingray | 11 g |
| Bird | Henicophaps albifrons | New Guinea bronzewing | 2.18 g |
| Bird | Henicorhina leucosticta | White-breasted wood wren | 809 mg |
| Fish | Heniochus acuminatus | Pennant coralfish / Longfin bannerfish / Reef bannerfish / Coachman | 360 mg |
| Fish | Heniochus chrysostomus | Threeband pennantfish / Threeband bannerfish / Pennant bannerfish | 387 mg |
| Fish | Heniochus intermedius | Red Sea bannerfish | 382 mg |
| Fish | Heniochus monoceros | Masked bannerfish | 614 mg |
| Fish | Heniochus singularius | Singular bannerfish | 636 mg |
| Fish | Heniochus varius | Horned bannerfish / Humphead bannerfish | 403 mg |
| Fish | Heptranchias perlo | Sharpnose sevengill shark / One-finned shark / Perlon shark / Sevengill cow shark | 2.57 g |
| Insect | Heriades rubicola | Small-headed resin bee | 0.42 mg |
| Fish | Heros severus | Banded cichlid / Striped cichlid / Sedate cichlid / Deacon | 138 mg |
| Mammal | Herpailurus yagouaroundi | Jaguarundi | 40.5 g |
| Mammal | Herpestes ichneumon | Egyptian mongoose / Ichneumon | 23.3 g |
| Mammal | Herpestes pulverulentus | Cape grey mongoose / Small grey mongoose | 11 g |
| Mammal | Herpestes sanguineus | Common slender mongoose / Black-tipped mongoose / Black-tailed mongoose | 8.78 g |
| Bird | Herpetotheres cachinnans | Laughing falcon | 6.39 g |
| Bird | Hesperiphona vespertina | Evening grosbeak | 1.76 g |
| Bird | Hesperoburhinus bistriatus | Double-striped thick-knee | 4.83 g |
| Bird | Hesperoburhinus superciliaris | Peruvian thick-knee | 3.42 g |
| Mammal | Hesperoptenus blanfordi | Blanford’s bat / Least false-serotine bat | 158 mg |
| Fish | Hetereleotris zonata | Goggles | 12.8 mg |
| Mammal | Heterocephalus glaber | Naked mole-rat / Sand puppy | 520 mg |
| Fish | Heterodontus francisci | Horn shark | 4.3 g |
| Fish | Heterodontus portusjacksoni | Port Jackson shark | 1.92 g |
| Mammal | Heterogeomys cherriei | Cherrie’s pocket gopher | 3.47 g |
| Mammal | Heterogeomys heterodus | Variable pocket gopher | 4.31 g |
| Mammal | Heterogeomys hispidus | Hispid pocket gopher | 3.98 g |
| Mammal | Heterohyrax brucei | Yellow-spotted rock hyrax / Bush hyrax | 12.3 g |
| Bird | Heteromyias albispecularis | Ashy robin / Black-cheeked robin | 1.09 g |
| Bird | Heteromyias cinereifrons | Grey-headed robin | 1.09 g |
| Mammal | Heteromys desmarestianus | Desmarest’s spiny pocket mouse | 1.13 g |
| Mammal | Heteromys irroratus | Mexican spiny pocket mouse | 1.06 g |
| Mammal | Heteromys pictus | Painted spiny pocket mouse | 780 mg |
| Reptile | Heteronotia binoei | Bynoe’s gecko | 33.7 mg |
| Bird | Heterophasia melanoleuca | Dark-backed sibia | 1.2 g |
| Fish | Heteropriacanthus cruentatus | Glasseyes / Glass bigeyes | 518 mg |
| Bird | Heteroscenes pallidus | Pallid cuckoo | 1.48 g |
| Bird | Heterotetrax vigorsii | Karoo korhaan / Karoo bustard | 3.4 g |
| Fish | Heterotis niloticus | African arowana / Nile arowana | 1.6 g |
| Fish | Hexanchus griseus | Bluntnose sixgill shark / Cow shark | 9.99 g |
| Fish | Hexanchus nakamurai | Bigeyed sixgill shark | 9 g |
| Bird | Hieraaetus morphnoides | Little eagle | 8.09 g |
| Bird | Hieraaetus pennatus | Booted eagle | 5.5 g |
| Bird | Hierococcyx hyperythrus | Northern hawk-cuckoo / Rufous hawk-cuckoo | 1.82 g |
| Bird | Hierococcyx pectoralis | Philippine hawk-cuckoo | 1.62 g |
| Bird | Hierococcyx sparverioides | Large hawk-cuckoo | 2.19 g |
| Reptile | Hierophis viridiflavus | Green whip snake / Western whip snake | 206 mg |
| Bird | Himantopus himantopus | Black-winged stilt | 1.97 g |
| Bird | Himantopus mexicanus | Black-necked stilt / Pied stilt | 1.97 g |
| Bird | Himatione sanguinea | ʻapapane | 692 mg |
| Fish | Hime japonica | Japanese thread-sail | 160 mg |
| Fish | Hippichthys cyanospilos | Blue spotted pipefish / Bluespeckled pipefish | 3.4 mg |
| Fish | Hippichthys penicillus | Beady pipefish | 4.4 mg |
| Fish | Hippocampus abdominalis | Big-belly seahorse / Pot-bellied seahorse | 15.8 mg |
| Fish | Hippocampus comes | Tiger tail seahorse | 14.3 mg |
| Fish | Hippocampus hippocampus | Short-snouted seahorse | 10.5 mg |
| Fish | Hippocampus histrix | Spiny seahorse / Thorny seahorse | 12 mg |
| Fish | Hippocampus kuda | Common seahorse / Estuary seahorse / Yellow seahorse / Spotted seahorse | 17.6 mg |
| Fish | Hippocampus reidi | Slender seahorse / Longsnout seahorse | 5.2 mg |
| Fish | Hippocampus spinosissimus | Hedgehog seahorse | 13.1 mg |
| Fish | Hippocampus trimaculatus | Flat-faced seahorse / Longnose seahorse / Low-crowned seahorse / Three-spot seahorse | 10.6 mg |
| Bird | Hippolais icterina | Icterine warbler | 505 mg |
| Mammal | Hippopotamus amphibius | Hippo / Common hippopotamus / Nile hippopotamus / River hippopotamus | 698 g |
| Fish | Hipposcarus harid | Longnose parrotfish / Candelamoa parrotfish | 1.06 g |
| Mammal | Hipposideros armiger | Great roundleaf bat / Great Himalayan leaf-nosed bat | 800 mg |
| Mammal | Hipposideros ater | Dusky leaf-nosed bat | 198 mg |
| Mammal | Hipposideros bicolor | Bicolored roundleaf bat | 239 mg |
| Mammal | Hipposideros caffer | Sundevall’s roundleaf bat / Sundevall’s leaf-nosed bat | 317 mg |
| Mammal | Hipposideros calcaratus | Spurred roundleaf bat | 369 mg |
| Mammal | Hipposideros cervinus | Fawn leaf-nosed bat | 214 mg |
| Mammal | Hipposideros diadema | Diadem leaf-nosed bat / Diadem roundleaf bat | 715 mg |
| Mammal | Hipposideros fulvus | Fulvus roundleaf bat / Fulvus leaf-nosed bat | 236 mg |
| Mammal | Hipposideros galeritus | Cantor’s roundleaf bat | 279 mg |
| Mammal | Hipposideros halophyllus | Thailand roundleaf bat | 152 mg |
| Mammal | Hipposideros lankadiva | Indian roundleaf bat / Large Ceylon leaf-nosed bat / Kelaart’s leaf-nosed bat | 733 mg |
| Mammal | Hipposideros larvatus | Intermediate roundleaf bat | 417 mg |
| Mammal | Hipposideros lekaguli | Large Asian roundleaf bat | 584 mg |
| Mammal | Hipposideros maggietaylorae | Maggie Taylor’s roundleaf bat | 543 mg |
| Mammal | Hipposideros pomona | Pomona roundleaf bat / Pomona leaf-nosed bat / Andersen’s leaf-nosed bat | 233 mg |
| Mammal | Hipposideros ridleyi | Ridley’s leaf-nosed bat / Ridley’s roundleaf bat / Singapore roundleaf horseshoe bat | 269 mg |
| Mammal | Hipposideros ruber | Noack’s roundleaf bat | 265 mg |
| Mammal | Hipposideros speoris | Schneider’s leaf-nosed bat / Schneider’s roundleaf bat | 284 mg |
| Mammal | Hipposideros turpis | Lesser great leaf-nosed bat / Lesser roundleaf bat | 599 mg |
| Mammal | Hippotragus equinus | Roan antelope | 388 g |
| Mammal | Hippotragus niger | Sable antelope | 282 g |
| Bird | Hirundapus caudacutus | White-throated needletail / Needle-tailed swift / Spine-tailed swift | 1.34 g |
| Bird | Hirundo neoxena | Welcome swallow | 497 mg |
| Bird | Hirundo rustica | Barn swallow | 705 mg |
| Bird | Histrionicus histrionicus | Harlequin duck / Painted duck / Totem pole duck / Rock duck | 4.99 g |
| Mammal | Histriophoca fasciata | Ribbon seal | 249 g |
| Mammal | Holochilus chacarius | Chacoan marsh rat / Chaco marsh rat | 1.61 g |
| Mammal | Holochilus sciureus | Amazonian marsh rat / Common marsh rat | 1.41 g |
| Fish | Hologymnosus annulatus | Ring wrasse / Ringed slender wrasse | 671 mg |
| Reptile | Homalopsis buccata | Puff-faced water snake / Masked water snake | 116 mg |
| Mammal | Homo sapiens | Human | 1.31 kg |
| Mammal | Hoolock hoolock | Western hoolock gibbon | 113 g |
| Fish | Hoplichthys citrinus | Lemon ghost flathead | 103 mg |
| Insect | Hoplitis papaveris | – | 1.1 mg |
| Mammal | Hoplomys gymnurus | Armored rat | 4.13 g |
| Fish | Hoplostethus mediterraneus | Silver roughy / Mediterranean slimehead | 534 mg |
| Bird | Hoploxypterus cayanus | Pied plover / Pied lapwing | 1.6 g |
| Bird | Horizocerus albocristatus | Western long-tailed hornbill | 5.06 g |
| Fish | Howella sherborni | Sherborn’s pelagic basslet / Sherborn’s pelagic bass | 35.5 mg |
| Mammal | Hsunycteris thomasi | Thomas’s nectar bat | 344 mg |
| Mammal | Hyaena hyaena | Striped hyena | 97.5 g |
| Mammal | Hyaenodon horridus | – | 85 g |
| Amphibian | Hyalinobatrachium fleischmanni | Fleischmann’s glass frog / Northern glass frog | 21.3 mg |
| Mammal | Hybomys trivirgatus | Temminck’s striped mouse / West African hybomys | 1.1 g |
| Mammal | Hydrictis maculicollis | Spotted-necked otter / Speckle-throated otter | 33 g |
| Bird | Hydrobates leucorhous | Leach’s storm petrel / Leach’s petrel | 861 mg |
| Bird | Hydrobates microsoma | Least storm petrel | 528 mg |
| Bird | Hydrobates tethys | Wedge-rumped storm petrel | 622 mg |
| Bird | Hydrobates tristrami | Tristram’s storm petrel / ʻakihikeʻehiʻale / Sooty storm petrel | 1.1 g |
| Mammal | Hydrochoerus hydrochaeris | Capybara / Greater capybara | 64.9 g |
| Mammal | Hydrochoerus isthmius | Lesser capybara | 52.3 g |
| Bird | Hydrocoloeus minutus | Little gull / Little seagull | 1.9 g |
| Fish | Hydrolagus bemisi | Pale ghost fish | 2.99 g |
| Fish | Hydrolagus mirabilis | Large-eyed rabbitfish | 1.86 g |
| Fish | Hydrolagus novaezealandiae | Dark ghostshark | 2.9 g |
| Mammal | Hydromys chrysogaster | Rakali / Rabe / Australian otter / Water-rat | 4.33 g |
| Bird | Hydrophasianus chirurgus | Pheasant-tailed jacana | 1.45 g |
| Mammal | Hydropotes inermis | Water deer | 52.7 g |
| Bird | Hydroprogne caspia | Caspian tern | 4.79 g |
| Bird | Hydropsalis torquata | Scissor-tailed nightjar | 1.6 g |
| Bird | Hydrornis guajanus | Javan banded pitta / Banded pitta | 1.42 g |
| Reptile | Hydrosaurus weberi | Weber’s sailfin lizard / Halmahera sailfin dragon | 961 mg |
| Mammal | Hydrurga leptonyx | Leopard seal / Sea leopard | 713 g |
| Mammal | Hyemoschus aquaticus | Water chevrotain / Fanged deer | 27.5 g |
| Amphibian | Hyla annectans | Jerdon’s tree frog / Assam treefrog / Indian hylid frog / Green leave frog | 25.9 mg |
| Amphibian | Hyla arborea | European tree frog | 45 mg |
| Amphibian | Hyla chinensis | Common Chinese tree frog / Common Chinese treetoad / Chinese tree toad | 25.1 mg |
| Amphibian | Hyla cinerea | American green tree frog | 43.7 mg |
| Amphibian | Hyla meridionalis | Mediterranean tree frog / Stripeless tree frog | 39.2 mg |
| Amphibian | Hyla sanchiangensis | San Chiang tree frog | 24.6 mg |
| Amphibian | Hyla savignyi | Savigny’s treefrog / Lemon-yellow tree frog / Middle East tree frog | 54.8 mg |
| Amphibian | Hyla tsinlingensis | Shensi tree frog | 20 mg |
| Bird | Hylacola cauta | Shy heathwren | 837 mg |
| Bird | Hylacola pyrrhopygia | Chestnut-rumped heathwren | 1.07 g |
| Insect | Hylaeus mesillae | Mesilla masked bee | 0.26 mg |
| Insect | Hylaeus modestus | Modest masked bee | 0.299 mg |
| Amphibian | Hylarana guentheri | Günther’s frog / Günther’s Amoy frog | 75.8 mg |
| Mammal | Hylobates agilis | Agile gibbon / Black-handed gibbon | 88.3 g |
| Mammal | Hylobates klossii | Kloss’s gibbon / Mentawai gibbon / Bilou / Dwarf siamang | 90 g |
| Mammal | Hylobates lar | Lar gibbon / White-handed gibbon | 98.2 g |
| Mammal | Hylobates moloch | Silvery gibbon / Javan gibbon | 102 g |
| Mammal | Hylobates muelleri | Müller’s gibbon / Southern grey gibbon | 94.9 g |
| Mammal | Hylobates pileatus | Pileated gibbon | 86.2 g |
| Mammal | Hylochoerus meinertzhageni | Giant forest hog | 141 g |
| Bird | Hylocichla mustelina | Wood thrush | 1.3 g |
| Mammal | Hylopetes spadiceus | Red-cheeked flying squirrel | 1.87 g |
| Bird | Hylophylax naevius | Spot-backed antbird | 611 mg |
| Bird | Hymenolaimus malacorhynchos | Blue duck / Whio | 5.4 g |
| Bird | Hymenops perspicillatus | Spectacled tyrant | 789 mg |
| Amphibian | Hynobius naevius | Spotted salamander / Sagami salamander / Japanese salamander / Blotched salamander | 19.2 mg |
| Amphibian | Hynobius nebulosus | Mitsyama salamander | 9 mg |
| Mammal | Hyopsodus miticulus | – | 3.2 g |
| Fish | Hypanus americanus | Southern stingray | 26.5 g |
| Fish | Hypanus sabinus | Atlantic stingray | 65.5 g |
| Fish | Hyperlophus translucidus | Glassy sprat / Glas-sandbrisling / Grassy sprat / Translucent sprat | 16 mg |
| Amphibian | Hyperolius concolor | Variable reed frog / Hallowell’s sedge frog | 14.9 mg |
| Fish | Hyperoplus lanceolatus | Great sand eel / Great sandeel | 84 mg |
| Fish | Hypoatherina temminckii | Samoan silverside | 79 mg |
| Bird | Hypocnemis cantator | Guianan warbling antbird / Guianan antwarbler | 651 mg |
| Fish | Hyporhamphus dussumieri | Dussumier’s halfbeak / Slender garfish | 349 mg |
| Fish | Hyporhamphus limbatus | Congaturi halfbeak / Valenciennes halfbeak | 59 mg |
| Fish | Hyporthodus septemfasciatus | Convict grouper | 51 mg |
| Fish | Hypostomus plecostomus | Suckermouth catfish / Common pleco | 80 mg |
| Bird | Hypotaenidia sylvestris | Lord Howe woodhen / Lord Howe Island woodhen / Lord Howe wood rail / Lord Howe rail | 3 g |
| Bird | Hypothymis azurea | Black-naped monarch | 539 mg |
| Fish | Hypseleotris aurea | Golden gudgeon | 14.4 mg |
| Fish | Hypseleotris galii | Firetail gudgeon / Fire-tailed gudgeon / Gale’s carp-gudgeon | 8.86 mg |
| Mammal | Hypsignathus monstrosus | Hammer-headed bat / Hammer-headed fruit bat / Big-lipped bat / Hammerhead bat | 3.39 g |
| Reptile | Hypsilurus papuensis | Papua forest dragon | 306 mg |
| Bird | Hypsipetes philippinus | Philippine bulbul | 1.16 g |
| Mammal | Hypsugo imbricatus | Brown pipistrelle | 137 mg |
| Mammal | Hypsugo pulveratus | Chinese pipistrelle | 143 mg |
| Mammal | Hystrix africaeaustralis | Cape porcupine / Cape crested porcupine / South African porcupine | 29.1 g |
| Mammal | Hystrix brachyura | Malayan porcupine / Himalayan porcupine | 37.6 g |
| Mammal | Hystrix cristata | Crested porcupine / African crested porcupine | 38.9 g |
| Mammal | Hystrix indica | Indian crested porcupine | 44.1 g |
| Mammal | Hystrix sumatrae | Sumatran porcupine | 27 g |
| Bird | Ibidorhyncha struthersii | Ibisbill | 2.38 g |
| Mammal | Ichneumia albicauda | White-tailed mongoose | 27.4 g |
| Bird | Ichthyaetus hemprichii | Sooty gull / Aden gull / Hemprich’s gull / Sooty seagull | 2.9 g |
| Bird | Ichthyaetus leucophthalmus | White-eyed gull / White-eyed seagull | 3.2 g |
| Fish | Ichthyomyzon castaneus | Chestnut lamprey | 4.9 mg |
| Fish | Ichthyomyzon greeleyi | Mountain brook lamprey / Allegheny brook lamprey | 3.7 mg |
| Fish | Ichthyomyzon unicuspis | Silver lamprey | 10.9 mg |
| Fish | Ictalurus punctatus | Channel catfish / Channel cat | 162 mg |
| Bird | Icteria virens | Yellow-breasted chat | 941 mg |
| Bird | Icterus galbula | Baltimore oriole | 1.17 g |
| Bird | Icterus spurius | Orchard oriole / Ochre oriole / Fuertes’s oriole | 890 mg |
| Bird | Icthyophaga humilis | Lesser fish eagle | 8.91 g |
| Bird | Icthyophaga leucogaster | White-bellied sea eagle / White-breasted sea eagle | 13.1 g |
| Bird | Icthyophaga vocifer | African fish eagle / African sea eagle | 12.9 g |
| Mammal | Ictidomys mexicanus | Mexican ground squirrel | 3.5 g |
| Mammal | Ictidomys tridecemlineatus | Thirteen-lined ground squirrel / Striped gopher / Leopard ground squirrel / Squinny | 2.31 g |
| Bird | Ictinia mississippiensis | Mississippi kite | 3.82 g |
| Mammal | Ictonyx libycus | Saharan striped polecat / Saharan striped weasel / Libyan striped weasel | 4.48 g |
| Mammal | Ictonyx striatus | Striped polecat / African polecat / Zoril / Zorille | 8.9 g |
| Fish | Idiacanthus fasciola | Ribbon sawtail fish | 5.9 mg |
| Bird | Ifrita kowaldi | Blue-capped ifrit | 1.3 g |
| Mammal | Ignacius graybullianus | – | 2.22 g |
| Reptile | Iguana iguana | American iguana / Common green iguana | 930 mg |
| Dinosaur | Iguanodon bernissartensis | Iguanodon | 125 g |
| Bird | Illadopsis fulvescens | Brown illadopsis / Brown thrush-babbler | 1.23 g |
| Bird | Indicator minor | Lesser honeyguide | 694 mg |
| Mammal | Indri indri | Indri / Babakoto | 37.2 g |
| Mammal | Inia geoffrensis | Amazon river dolphin / Boto / Bufeo / Pink river dolphin | 632 g |
| Mammal | Iomys horsfieldii | Javanese flying squirrel | 3.38 g |
| Fish | Iracundus signifer | Decoy scorpionfish | 75 mg |
| Bird | Irania gutturalis | White-throated robin / Irania | 650 mg |
| Bird | Irediparra gallinacea | Comb-crested jacana / Lotusbird / Lilytrotter | 1.17 g |
| Bird | Irena puella | Asian fairy-bluebird | 1.26 g |
| Bird | Iridosornis rufivertex | Golden-crowned tanager | 1.38 g |
| Fish | Isichthys henryi | – | 122 mg |
| Fish | Isistius brasiliensis | Cookiecutter shark / Cigar shark | 370 mg |
| Fish | Iso natalensis | Surf sprite | 11.5 mg |
| Insect | Isodontia mexicana | Mexican grass-carrying wasp | 3.19 mg |
| Mammal | Isoodon macrourus | Northern brown bandicoot | 3.06 g |
| Mammal | Isoodon obesulus | Southern brown bandicoot | 4.12 g |
| Bird | Ispidina picta | African pygmy kingfisher | 418 mg |
| Amphibian | Isthmohyla pseudopuma | Gunther’s Costa Rican tree frog | 30.5 mg |
| Mammal | Isthmomys flavidus | Yellow isthmus rat | 1.37 g |
| Mammal | Isthmomys pirrensis | Mount Pirri isthmus rat | 1.71 g |
| Fish | Istiblennius bellus | Imspringer / Beautiful rockskipper / Dusky blenny | 40.3 mg |
| Fish | Istiblennius edentulus | Rippled rockskipper / Rippled blenny / Smooth-lipped blenny / Toothless blenny | 50 mg |
| Fish | Istiblennius rivulatus | – | 38.7 mg |
| Fish | Istigobius decoratus | Decorated goby | 48.6 mg |
| Fish | Istigobius ornatus | Ornate goby | 43 mg |
| Fish | Istigobius rigilius | Rigilius goby | 45.4 mg |
| Fish | Istiophorus platypterus | Indo-Pacific sailfish | 2.91 g |
| Fish | Isurus oxyrinchus | Shortfin mako shark / Shortfin mako / Blue pointer / Bonito shark | 25.6 g |
| Bird | Ithaginis cruentus | Blood pheasant / Blood partridge | 3.29 g |
| Fish | Ivindomyrus marchei | Ogooue mormyrid | 342 mg |
| Bird | Ixoreus naevius | Varied thrush | 1.77 g |
| Fish | Jabarichromis pfefferi | – | 119 mg |
| Bird | Jabiru mycteria | Jabiru | 24.3 g |
| Bird | Jacamerops aureus | Great jacamar | 1.15 g |
| Bird | Jacana jacana | Wattled jacana | 1.34 g |
| Bird | Jacana spinosa | Northern jacana / Northern jaçana | 1.43 g |
| Mammal | Jaculus jaculus | Lesser jerboa | 1.53 g |
| Mammal | Jaculus orientalis | Greater Egyptian jerboa | 2.5 g |
| Fish | Jaydia ellioti | Flag-in cardinal-fish | 75 mg |
| Fish | Julidochromis marlieri | Marlier’s Julie / Spotted Julie / Chequered Julie | 52 mg |
| Fish | Julidochromis ornatus | Golden Julie | 56.2 mg |
| Fish | Julidochromis regani | Convict julie | 61 mg |
| Fish | Julidochromis transcriptus | Masked julie | 42.9 mg |
| Bird | Junco hyemalis | Dark-eyed junco | 860 mg |
| Bird | Jynx torquilla | Eurasian wryneck / Northern wryneck | 893 mg |
| Fish | Kaiwarinus equula | Whitefin trevally / Horse trevally | 1.14 g |
| Fish | Kajikia audax | Striped marlin | 1.42 g |
| Amphibian | Kaloula pulchra | Banded bullfrog / Common Asian frog / Asian painted frog / Digging frog | 41 mg |
| Amphibian | Kaloula rugifera | Sichuan digging frog / Szechwan narrowmouth toad | 23.3 mg |
| Amphibian | Kaloula verrucosa | Verrucous digging frog / Chinese narrowmouth toad | 39.8 mg |
| Amphibian | Kassina senegalensis | Senegal running frog / Senegal kassina / Senegal Kassin’s frog / Running frog | 28 mg |
| Fish | Katsuwonus pelamis | Skipjack tuna / Cakalang / Katsuo / Arctic bonito | 4.26 g |
| Bird | Kaupifalco monogrammicus | Lizard buzzard / Lizard hawk | 3.99 g |
| Dinosaur | Kentrosaurus aethiopicus | Kentrosaurus | 24 g |
| Mammal | Kerivoula papillosa | Papillose woolly bat | 310 mg |
| Mammal | Kerivoula pellucida | Clear-winged woolly bat | 203 mg |
| Mammal | Kerivoula phalaena | Spurrell’s woolly bat | 116 mg |
| Bird | Ketupa ketupu | Buffy fish owl / Malay fish owl | 13.2 g |
| Bird | Ketupa lactea | Verreaux’s eagle-owl / Milky eagle owl / Giant eagle owl | 17.5 g |
| Bird | Ketupa poensis | Fraser’s eagle-owl | 9 g |
| Reptile | Kinosternon leucostomum | White-lipped mud turtle | 354 mg |
| Bird | Klais guimeti | Violet-headed hummingbird | 174 mg |
| Fish | Knipowitschia caucasica | Caucasian dwarf goby | 5.47 mg |
| Mammal | Kobus ellipsiprymnus | Waterbuck | 305 g |
| Mammal | Kobus kob | Kob | 204 g |
| Mammal | Kobus leche | Lechwe / Red lechwe / Southern lechwe | 223 g |
| Mammal | Kogia breviceps | Pygmy sperm whale | 1.01 kg |
| Mammal | Kogia sima | Dwarf sperm whale | 622 g |
| Fish | Kraemeria cunicularia | Transparent sand dart | 0.906 mg |
| Fish | Kraemeria nuda | – | 1.07 mg |
| Fish | Kraemeria samoensis | Samoan sand dart | 0.7 mg |
| Fish | Kuhlia mugil | Barred flagtail / Fiveband flagtail / Five-bar flagtail | 203 mg |
| Fish | Kuhlia sandvicensis | Reticulated flagtail / Zebra-headed flagtail / Hawaiian flagtail | 294 mg |
| Amphibian | Kurixalus odontotarsus | Serrate-legged small treefrog | 16.3 mg |
| Fish | Kyphosus bigibbus | Brown chub / Grey drummer / Darkfin drummer / Insular rudderfish | 1.22 g |
| Fish | Kyphosus cinerascens | Blue sea chub / Blue-bronze chub | 1.54 g |
| Fish | Labrichthys unilineatus | Tubelip wrasse | 100 mg |
| Fish | Labroides dimidiatus | Bluestreak cleaner wrasse | 69.7 mg |
| Fish | Labroides phthirophagus | Hawaiian cleaner wrasse / Golden cleaner wrasse | 52 mg |
| Fish | Labrus bergylta | Ballan wrasse | 809 mg |
| Fish | Labrus mixtus | Cuckoo wrasse | 502 mg |
| Reptile | Lacerta agilis | Sand lizard | 81.6 mg |
| Reptile | Lacerta strigata | Caucasus emerald lizard / Five-streaked lizard / Caspian green lizard | 106 mg |
| Reptile | Lacerta viridis | European green lizard | 139 mg |
| Fish | Lachnolaimus maximus | Hogfish | 911 mg |
| Fish | Lactophrys bicaudalis | Spotted trunkfish / Boxfish / Cow-fish / Shellfish | 386 mg |
| Fish | Lactoria cornuta | Longhorn cowfish / Horned boxfish | 106 mg |
| Mammal | Lagenorhynchus albirostris | White-beaked dolphin | 1.13 kg |
| Mammal | Lagidium viscacia | Southern viscacha | 15.1 g |
| Bird | Lagonosticta senegala | Red-billed firefinch / Senegal firefinch | 402 mg |
| Bird | Lagopus lagopus | Willow ptarmigan / Willow grouse | 2.5 g |
| Bird | Lagopus muta | Rock ptarmigan / Ptarmigan | 2.4 g |
| Mammal | Lagorchestes conspicillatus | Spectacled hare-wallaby | 14.3 g |
| Mammal | Lagorchestes hirsutus | Rufous hare-wallaby / Mala | 7.91 g |
| Mammal | Lagorchestes leporides | Eastern hare-wallaby / Common hare wallaby | 12.8 g |
| Mammal | Lagostomus maximus | Plains viscacha / Plains vizcacha | 13.1 g |
| Mammal | Lagostrophus fasciatus | Banded hare-wallaby / Mernine / Munning | 7.13 g |
| Mammal | Lagothrix lagothricha | Common woolly monkey / Brown woolly monkey / Humboldt’s woolly monkey | 95.9 g |
| Mammal | Lagurus lagurus | Steppe lemming / Steppe vole | 415 mg |
| Bird | Lalage sueurii | White-shouldered triller | 901 mg |
| Bird | Lalage tricolor | White-winged triller | 850 mg |
| Mammal | Lama glama | Llama | 219 g |
| Mammal | Lama vicugna | Vicuña / Vicuna | 199 g |
| Fish | Lampanyctus crocodilus | Jewel lanternfish | 149 mg |
| Fish | Lampanyctus photonotus | – | 14.1 mg |
| Fish | Lampetra fluviatilis | European river lamprey / River lamprey / Lampern | 15 mg |
| Fish | Lampetra planeri | Brook lamprey / European brook lamprey / Western brook lamprey | 11.8 mg |
| Fish | Lampetra richardsoni | Western brook lamprey | 4.5 mg |
| Bird | Lampornis amethystinus | Amethyst-throated mountaingem / Amethyst-throated mountain-gem / Amethyst-throated hummingbird | 200 mg |
| Reptile | Lampropeltis triangulum | Milk snake / Milksnake | 124 mg |
| Reptile | Lampropholis guichenoti | Common garden skink / Grass skink / Guichenot’s grass skink / Pale-flecked garden sunskink | 20.1 mg |
| Bird | Lamprotornis purpureus | Purple starling / Purple glossy starling | 2.2 g |
| Bird | Lamprotornis superbus | Superb starling | 1.78 g |
| Bird | Laniarius erythrogaster | Black-headed gonolek | 1.62 g |
| Bird | Lanius collaris | Southern fiscal / Fiscal shrike / Jackie hangman / Butcher bird | 1.11 g |
| Bird | Lanius collurio | Red-backed shrike | 1.01 g |
| Bird | Lanius cristatus | Brown shrike | 1.09 g |
| Bird | Lanius excubitor | Great grey shrike | 1.63 g |
| Bird | Lanius ludovicianus | Loggerhead shrike / Butcherbird | 1.59 g |
| Bird | Lanius senator | Woodchat shrike | 1.12 g |
| Fish | Larabicus quadrilineatus | Four-line wrasse | 80.6 mg |
| Bird | Larus argentatus | European herring gull / Herring gull / European herring seagull | 5.67 g |
| Bird | Larus californicus | California gull / California seagull | 5.25 g |
| Bird | Larus canus | Common gull / Common seagull | 4.03 g |
| Bird | Larus crassirostris | Black-tailed gull / Black-tailed seagull | 4.77 g |
| Bird | Larus delawarensis | Ring-billed gull / Ring-billed seagull | 7.35 g |
| Bird | Larus dominicanus | Kelp gull / Dominican gull / Southern black-backed gull / Kelp seagull | 6.37 g |
| Bird | Larus fuscus | Lesser black-backed gull / Lesser black-backed seagull | 5.95 g |
| Bird | Larus glaucescens | Glaucous-winged gull / Glaucous-winged seagull | 7.89 g |
| Bird | Larus glaucoides | Iceland gull / Iceland seagull | 6.95 g |
| Bird | Larus heermanni | Heermann’s gull / Heermann’s seagull | 3.99 g |
| Bird | Larus hyperboreus | Glaucous gull / Glaucous seagull | 7.83 g |
| Bird | Larus marinus | Great black-backed gull / Great black-backed seagull | 4.91 g |
| Bird | Larus occidentalis | Western gull / Western seagull | 7.14 g |
| Bird | Larus pacificus | Pacific gull / Pacific seagull | 7.04 g |
| Bird | Larus schistisagus | Slaty-backed gull / Slaty-backed seagull | 7.72 g |
| Insect | Lasioglossum calceatum | Common furrow bee | 0.66 mg |
| Insect | Lasioglossum coriaceum | Leathery sweat bee | 0.742 mg |
| Insect | Lasioglossum cressonii | Cresson’s sweat bee | 0.466 mg |
| Insect | Lasioglossum fulvicorne | Chalk furrow bee | 0.3 mg |
| Insect | Lasioglossum imitatum | Bristle sweat bee | 0.297 mg |
| Insect | Lasioglossum immunitum | – | 0.494 mg |
| Insect | Lasioglossum leucozonium | White-zoned furrow bee | 0.48 mg |
| Insect | Lasioglossum malachurum | Sharp-collared furrow bee | 0.415 mg |
| Insect | Lasioglossum punctatissimum | Long-faced furrow bee | 0.298 mg |
| Insect | Lasioglossum sexnotatum | Ashy furrow bee | 0.818 mg |
| Insect | Lasioglossum sexstrigatum | Fringed furrow bee | 0.231 mg |
| Insect | Lasioglossum zonulus | Bull-headed furrow bee | 0.644 mg |
| Mammal | Lasiorhinus latifrons | Southern hairy-nosed wombat | 56.5 g |
| Mammal | Lasiurus borealis | Eastern red bat | 170 mg |
| Reptile | Latastia longicaudata | Common long-tailed lizard / Southern long-tailed lizard | 119 mg |
| Bird | Laterallus albigularis | White-throated crake | 1.08 g |
| Bird | Lathamus discolor | Swift parrot / Swift waylitja | 2.46 g |
| Fish | Latimeria chalumnae | West Indian Ocean coelacanth / Gombessa / African coelacanth / Coelacanth | 1.1 g |
| Mammal | Lavia frons | Yellow-winged bat | 644 mg |
| Bird | Legatus leucophaius | Piratic flycatcher | 682 mg |
| Mammal | Leggadina forresti | Forrest’s mouse / Desert short-tailed mouse | 490 mg |
| Reptile | Leiocephalus carinatus | Northern curly-tailed lizard / Saw-scaled curlytail | 71.8 mg |
| Reptile | Leiocephalus personatus | Hispaniolan masked curly-tailed lizard / Hispaniolan masked curlytail / Haitian curlytail lizard / Green-legged curly-tail | 92.2 mg |
| Reptile | Leiocephalus schreibersii | Hispaniolan curlytail lizard / Hispaniolan khaki curlytail / Red-sided curlytail lizard / Red-sided curly-tailed lizard | 107 mg |
| Reptile | Leiolepis ngovantrii | Ngo Van Tri’s Lady Butterfly Lizard | 185 mg |
| Bird | Leiothlypis peregrina | Tennessee warbler | 428 mg |
| Bird | Leiothlypis ruficapilla | Nashville warbler | 414 mg |
| Bird | Leiothrix argentauris | Silver-eared mesia | 974 mg |
| Bird | Leiothrix lutea | Red-billed leiothrix / Pekin robin / Pekin nightingale / Japanese nightingale | 991 mg |
| Bird | Leipoa ocellata | Malleefowl | 4.66 g |
| Insect | Leipomeles dorsata | – | 0.087 mg |
| Mammal | Lemmus lemmus | Norway lemming / Norwegian lemming | 870 mg |
| Mammal | Lemmus sibiricus | West Siberian lemming / Western Siberian brown lemming | 1.35 g |
| Mammal | Lemmus trimucronatus | Canadian lemming / Nearctic brown lemming | 992 mg |
| Mammal | Lemniscomys striatus | Typical striped grass mouse | 850 mg |
| Mammal | Lemur catta | Ring-tailed lemur | 22.1 g |
| Mammal | Leontocebus fuscicollis | Brown-mantled tamarin / Spix’s saddle-back tamarin | 8 g |
| Mammal | Leontocebus nigricollis | Black-mantled tamarin | 8.9 g |
| Mammal | Leontopithecus chrysomelas | Golden-headed lion tamarin / Golden-headed tamarin | 12.1 g |
| Mammal | Leontopithecus rosalia | Golden lion tamarin / Golden lion marmoset | 13.2 g |
| Mammal | Leopardus geoffroyi | Geoffroy’s cat | 34 g |
| Mammal | Leopardus pardalis | Ocelot | 63 g |
| Mammal | Leopoldamys edwardsi | Edwards’s long-tailed giant rat | 4.81 g |
| Mammal | Leopoldamys milleti | Millet’s leopoldamys | 4.22 g |
| Mammal | Leopoldamys sabanus | Long-tailed giant rat | 3.98 g |
| Mammal | Leopoldamys siporanus | Mentawai long-tailed giant rat | 3.39 g |
| Fish | Lepadogaster candolii | Connemarra clingfish | 14 mg |
| Fish | Lepadogaster lepadogaster | Shore clingfish | 14.3 mg |
| Fish | Lepidiolamprologus attenuatus | – | 60.3 mg |
| Fish | Lepidiolamprologus elongatus | – | 169 mg |
| Fish | Lepidiolamprologus kendalli | – | 133 mg |
| Fish | Lepidiolamprologus pleuromaculatus | – | 67.5 mg |
| Fish | Lepidiolamprologus profundicola | – | 164 mg |
| Fish | Lepidion eques | Morid cod / Largeye lepidion / North Atlantic codling | 489 mg |
| Bird | Lepidocolaptes affinis | Spot-crowned woodcreeper | 1.17 g |
| Bird | Lepidocolaptes souleyetii | Streak-headed woodcreeper | 1.08 g |
| Fish | Lepidocybium flavobrunneum | Escolar | 2.28 g |
| Reptile | Lepidodactylus lugubris | Mourning gecko / Common smooth-scaled gecko | 16.9 mg |
| Reptile | Lepidodactylus orientalis | Oriental scaly-toed gecko | 16.5 mg |
| Fish | Lepidonotothen squamifrons | Grey rockcod / Grey notothen / Stripe-eyes notothen / Stripe-eyed rockcod | 325 mg |
| Fish | Lepidosiren paradoxa | South American lungfish / American mud-fish / Scaly salamanderfish | 411 mg |
| Fish | Lepidotrigla papilio | Spiny gurnard / Butterfly gurnard / Eastern spiny gurnard / Southern spiny gurnard | 142 mg |
| Mammal | Lepilemur dorsalis | Gray-backed sportive lemur / Gray’s sportive lemur / Back-striped sportive lemur | 6.7 g |
| Mammal | Lepilemur edwardsi | Milne-Edwards’ sportive lemur / Milne-Edwards’ weasel lemur | 7.25 g |
| Mammal | Lepilemur leucopus | White-footed sportive lemur / White-footed weasel lemur / Dry-bush weasel lemur | 6.99 g |
| Mammal | Lepilemur microdon | Small-toothed sportive lemur / Small-toothed weasel lemur | 9.75 g |
| Mammal | Lepilemur mustelinus | Weasel sportive lemur / Greater sportive lemur / Weasel lemur / Greater weasel lemur | 9.66 g |
| Mammal | Lepilemur ruficaudatus | Red-tailed sportive lemur / Red-tailed weasel lemur | 7.64 g |
| Fish | Lepisosteus osseus | Longnose gar / Longnose garpike / Billy gar | 603 mg |
| Fish | Lepomis cyanellus | Green sunfish | 114 mg |
| Fish | Lepomis gibbosus | Pumpkinseed / Common sunfish / Sun perch / Pond perch | 141 mg |
| Fish | Leptagonus decagonus | Atlantic poacher | 55 mg |
| Mammal | Leptailurus serval | Serval | 59.4 g |
| Amphibian | Leptobrachella bijie | Bijie leaf litter toad | 22.2 mg |
| Amphibian | Leptobrachella feii | Fei’s leaf litter toad | 16.4 mg |
| Amphibian | Leptobrachella oshanensis | Oshan metacarpal-tubercled toad / Pigmy crawl frog | 15.2 mg |
| Amphibian | Leptobrachium boringii | Emei moustache toad / Taosze spiny toad | 65.2 mg |
| Amphibian | Leptobrachium leishanense | Leishan spiny toad / Leishan moustache toad | 19.5 mg |
| Bird | Leptocoma calcostetha | Copper-throated sunbird | 425 mg |
| Amphibian | Leptodactylus fuscus | Rufous frog | 88 mg |
| Amphibian | Leptodactylus latrans | Rana criolla / Sapo-rana llanero / Butter frog / Argus frog | 80.8 mg |
| Amphibian | Leptodactylus pentadactylus | Smoky jungle frog | 267 mg |
| Amphibian | Leptodactylus wagneri | Wagner’s white-lipped frog | 38.2 mg |
| Amphibian | Leptolalax ventripunctatus | Yunnan Asian toad / Speckle-bellied metacarpal-tubercled toad | 16.8 mg |
| Mammal | Leptolambda schmidti | – | 69 g |
| Mammal | Leptonychotes weddellii | Weddell seal | 565 g |
| Mammal | Leptonycteris curasoae | Southern long-nosed bat / Curaçaoan long-nosed bat | 573 mg |
| Mammal | Leptonycteris nivalis | Greater long-nosed bat / Mexican long-nosed bat | 586 mg |
| Bird | Leptoptilos crumenifer | Marabou stork | 27.8 g |
| Bird | Leptoptilos dubius | Greater adjutant / Hargila | 29.6 g |
| Bird | Leptoptilos javanicus | Lesser adjutant | 21.5 g |
| Bird | Leptosomus discolor | Cuckoo-roller / Courol | 4.25 g |
| Bird | Leptotila cassinii | Grey-chested dove | 1.35 g |
| Bird | Leptotila jamaicensis | Caribbean dove | 1.42 g |
| Bird | Leptotila plumbeiceps | Grey-headed dove | 1.33 g |
| Bird | Leptotila rufaxilla | Grey-fronted dove | 1.32 g |
| Bird | Leptotila verreauxi | White-tipped dove | 1.47 g |
| Mammal | Lepus americanus | Snowshoe hare / Varying hare / Snowshoe rabbit | 9.43 g |
| Mammal | Lepus arcticus | Arctic hare | 14.5 g |
| Mammal | Lepus californicus | Black-tailed jackrabbit / American desert hare | 12.6 g |
| Mammal | Lepus capensis | Cape hare / Desert hare | 10.8 g |
| Mammal | Lepus europaeus | European hare / Brown hare | 15.2 g |
| Mammal | Lepus nigricollis | Indian hare / Black-naped hare | 11.5 g |
| Mammal | Lepus timidus | Mountain hare / Blue hare / Tundra hare / Variable hare | 14.7 g |
| Reptile | Lerista bipes | North-western sandslider | 5.1 mg |
| Reptile | Lerista bougainvillii | Bougainville’s skink / South-eastern slider / Bougainville’s lerista | 11.1 mg |
| Reptile | Lerista muelleri | Wood mulch-slider / Mueller’s three-toed lerista / Mueller’s three-toed slider | 4.5 mg |
| Reptile | Lerista punctatovittata | Eastern robust slider | 18 mg |
| Bird | Lessonia rufa | Austral negrito / Patagonian negrito | 445 mg |
| Mammal | Lestoros inca | Incan caenolestid / Incan shrew opossum / Peruvian caenolestid | 489 mg |
| Fish | Lesueurigobius suerii | Lesueur’s goby | 9.27 mg |
| Fish | Lethenteron appendix | American brook lamprey | 13.4 mg |
| Fish | Lethenteron camtschaticum | Arctic lamprey / Korean lamprey / Japanese river lamprey / Japanese lampern | 25.1 mg |
| Fish | Lethrinus genivittatus | Longspine emperor / Threadfin emperor / Lance emperor / Lancer | 943 mg |
| Fish | Lethrinus lentjan | Pink ear emperor / Redspot emperor / Purple ear emperor / Purple-headed emperor | 1.66 g |
| Fish | Lethrinus mahsena | Sky emperor / Mahsena emperor / Cutthroat emperor | 1.72 g |
| Fish | Lethrinus microdon | Smalltooth emperor / Longface emperor / Pigface bream | 1.7 g |
| Fish | Lethrinus obsoletus | Orange-striped emperor / Yellow-banded emperor / Yellowstripe emperor | 856 mg |
| Fish | Lethrinus variegatus | Slender emperor / Variegated emperor | 1.01 g |
| Fish | Lethrinus xanthochilus | Yellowlip emperor | 2.37 g |
| Spider | Leucauge mariana | – | 0.146 mg |
| Bird | Leucocarbo atriceps | Imperial shag / Imperial cormorant / Blue-eyed shag / Blue-eyed cormorant | 14.6 g |
| Bird | Leucogeranus leucogeranus | Siberian crane / Siberian white crane / Snow crane | 20.5 g |
| Bird | Leuconotopicus villosus | Hairy woodpecker | 3.06 g |
| Bird | Leucophaeus atricilla | Laughing gull / Laughing seagull | 3.22 g |
| Bird | Leucophaeus pipixcan | Franklin’s gull / Franklin’s seagull | 2.64 g |
| Bird | Leucophaeus scoresbii | Dolphin gull / Scoresby’s gull / Dolphin seagull | 4.81 g |
| Mammal | Leucopleurus acutus | Atlantic white-sided dolphin | 1.13 kg |
| Fish | Leucopsarion petersii | Ice goby | 5.49 mg |
| Fish | Leucoraja circularis | Sandy ray / Sandy skate | 3.61 g |
| Fish | Leucoraja fullonica | Shagreen ray / Shagreen skate / Fuller’s ray | 4.62 g |
| Fish | Leucoraja naevus | Cuckoo skate / Cuckoo ray | 1.98 g |
| Bird | Leucosarcia melanoleuca | Wonga pigeon / Wonga wonga | 2.5 g |
| Bird | Leucosticte arctoa | Asian rosy finch | 1.36 g |
| Bird | Lewinia pectoralis | Lewin’s rail | 1.39 g |
| Reptile | Lialis burtonis | Burton’s legless lizard | 36.9 mg |
| Reptile | Lialis jicari | Papua snake lizard / Jicar’s snake-lizard / New Guinea snake-lizard / Papua snake-lizard | 60 mg |
| Bird | Lichenostomus cratitius | Purple-gaped honeyeater | 953 mg |
| Bird | Lichenostomus melanops | Yellow-tufted honeyeater | 952 mg |
| Bird | Lichmera indistincta | Brown honeyeater | 529 mg |
| Slug | Limax maximus | Great grey slug / Leopard slug | 13.3 mg |
| Fish | Limnochromis auritus | Spangled cichlid | 58.2 mg |
| Fish | Limnochromis staneri | – | 215 mg |
| Bird | Limnodromus griseus | Short-billed dowitcher | 1.29 g |
| Bird | Limnodromus scolopaceus | Long-billed dowitcher | 1.42 g |
| Amphibian | Limnonectes fujianensis | Fujian large-headed frog | 58.9 mg |
| Bird | Limnothlypis swainsonii | Swainson’s warbler | 692 mg |
| Fish | Limnotilapia dardennii | Latticed cichlid | 355 mg |
| Bird | Limosa fedoa | Marbled godwit | 2.83 g |
| Bird | Limosa haemastica | Hudsonian godwit | 2.4 g |
| Bird | Limosa lapponica | Bar-tailed godwit | 2.71 g |
| Bird | Limosa limosa | Black-tailed godwit | 2.85 g |
| Bird | Linaria cannabina | Common linnet / Eurasian linnet | 670 mg |
| Bird | Linaria flavirostris | Twite | 401 mg |
| Fish | Lindbergichthys mizops | Toad notie / Toad notothen | 169 mg |
| Reptile | Liolaemus chiliensis | Chilean tree iguana | 104 mg |
| Mammal | Lionycteris spurrelli | Chestnut long-tongued bat | 352 mg |
| Fish | Liparis liparis | Common seasnail / Striped seasnail | 38 mg |
| Bird | Lipaugus vociferans | Screaming piha | 1.69 g |
| Fish | Lipophrys pholis | Shanny / Common blenny / Smooth blenny | 73 mg |
| Fish | Lipophrys trigloides | – | 40.5 mg |
| Mammal | Lipotes vexillifer | Baiji / Chinese river dolphin / Yangtze river dolphin / Yangtze dolphin | 534 g |
| Mammal | Lissodelphis borealis | Northern right whale dolphin | 1.16 kg |
| Amphibian | Lissotriton boscai | Boscá’s newt / Iberian newt | 12.7 mg |
| Amphibian | Lissotriton helveticus | Palmate newt | 8 mg |
| Amphibian | Lissotriton montandoni | Carpathian newt / Montandon’s newt | 9.1 mg |
| Amphibian | Lissotriton vulgaris | Smooth newt / Common newt / European newt / Northern smooth newt | 8.4 mg |
| Amphibian | Lithobates areolatus | Crawfish frog | 153 mg |
| Amphibian | Lithobates catesbeianus | American bullfrog / Bullfrog | 284 mg |
| Amphibian | Lithobates clamitans | Green frog | 109 mg |
| Amphibian | Lithobates palmipes | Amazon River frog | 174 mg |
| Amphibian | Lithobates pipiens | Northern leopard frog | 20.3 mg |
| Amphibian | Lithobates sylvaticus | Wood frog | 8.53 mg |
| Mammal | Litocranius walleri | Gerenuk / Giraffe gazelle | 118 g |
| Fish | Lobochilotes labiata | – | 397 mg |
| Mammal | Lobodon carcinophaga | Crabeater seal / Krill-eater seal | 586 g |
| Reptile | Lobulia elegans | Elegant lobulia | 37.3 mg |
| Bird | Locustella fluviatilis | River warbler | 450 mg |
| Bird | Locustella luscinioides | Savi’s warbler | 570 mg |
| Bird | Locustella naevia | Common grasshopper warbler | 550 mg |
| Mammal | Lonchophylla mordax | Goldman’s nectar bat | 432 mg |
| Mammal | Lonchorhina aurita | Tomes’s sword-nosed bat / Common sword-nosed bat | 377 mg |
| Bird | Lonchura atricapilla | Chestnut munia / Black-headed munia | 560 mg |
| Bird | Lonchura flaviprymna | Yellow-rumped mannikin / Yellow-rumped munia | 430 mg |
| Bird | Lonchura malacca | Tricoloured munia / Black-headed munia | 519 mg |
| Bird | Lonchura pallida | Pale-headed munia | 520 mg |
| Bird | Lonchura spectabilis | Hooded mannikin / Hooded munia / New Britain mannikin / Sclater’s mannikin | 488 mg |
| Bird | Lonchura striata | White-rumped munia / White-rumped mannikin / Striated finch | 625 mg |
| Mammal | Lontra canadensis | North American river otter / Northern river otter / River otter | 51.7 g |
| Mammal | Lontra felina | Marine otter | 38.9 g |
| Mammal | Lontra longicaudis | Neotropical otter / Neotropical river otter | 57.4 g |
| Bird | Lophaetus occipitalis | Long-crested eagle | 9.24 g |
| Fish | Lophius budegassa | Blackbellied angler / Blackbellied monkfish | 155 mg |
| Fish | Lophius piscatorius | Anglerfish / Common monkfish / Frog fish / Fishing frog | 498 mg |
| Mammal | Lophocebus albigena | Grey-cheeked mangabey / White-cheeked mangabey | 99.3 g |
| Mammal | Lophocebus aterrimus | Black crested mangabey | 105 g |
| Bird | Lophoceros alboterminatus | Crowned hornbill | 4.56 g |
| Bird | Lophoceros fasciatus | Congo pied hornbill | 4.97 g |
| Bird | Lophoceros nasutus | African grey hornbill | 4.2 g |
| Bird | Lophodytes cucullatus | Hooded merganser | 4.67 g |
| Fish | Lophogobius cristulatus | – | 16.7 mg |
| Fish | Lophogobius cyprinoides | Crested goby | 26 mg |
| Bird | Lophoictinia isura | Square-tailed kite | 6.73 g |
| Bird | Lopholaimus antarcticus | Topknot pigeon | 2.81 g |
| Bird | Lophonetta specularioides | Crested duck / South American crested duck | 5.01 g |
| Bird | Lophophanes cristatus | Crested tit / European crested tit | 681 mg |
| Bird | Lophophorus impejanus | Himalayan monal / Impeyan monal / Danphe / Danfe | 6.42 g |
| Bird | Lophorina superba | Vogelkop lophorina / Superb bird-of-paradise | 2.69 g |
| Reptile | Lophosaurus boydii | Boyd’s forest dragon | 338 mg |
| Bird | Lophura diardi | Siamese fireback / Diard’s fireback | 4.04 g |
| Bird | Lophura edwardsi | Edwards’s pheasant | 3.4 g |
| Bird | Lophura nycthemera | Silver pheasant | 4.66 g |
| Bird | Lophura swinhoii | Swinhoe’s pheasant / Taiwan blue pheasant | 4.4 g |
| Mammal | Lophuromys flavopunctatus | Yellow-spotted brush-furred rat | 1.01 g |
| Mammal | Lophuromys sikapusi | Rusty-bellied brush-furred rat | 1.13 g |
| Bird | Loriculus amabilis | Moluccan hanging parrot | 1.18 g |
| Bird | Loriculus galgulus | Blue-crowned hanging parrot | 1.52 g |
| Bird | Loriculus philippensis | Philippine hanging parrot / Colasisi | 1.53 g |
| Bird | Loriculus stigmatus | Great hanging parrot / Celebes hanging parrot / Sulawesi hanging parrot / Maroon-rumped hanging parrot | 1.5 g |
| Bird | Loriculus vernalis | Vernal hanging parrot | 1.49 g |
| Mammal | Loris lydekkerianus | Gray slender loris | 6.3 g |
| Mammal | Loris tardigradus | Red slender loris | 7.49 g |
| Bird | Lorius garrulus | Chattering lory | 5.36 g |
| Bird | Lorius lory | Black-capped lory | 5.3 g |
| Bird | Loxia curvirostra | Western black-capped lory / Tricolored lory | 1.5 g |
| Bird | Loxia leucoptera | Two-barred crossbill / White-winged crossbill | 1.46 g |
| Bird | Loxia pytyopsittacus | Parrot crossbill | 1.82 g |
| Bird | Loxipasser anoxanthus | Yellow-shouldered grassquit | 590 mg |
| Mammal | Loxodonta africana | African bush elephant / African savanna elephant | 5.27 kg |
| Reptile | Lucasium damaeum | Beaded gecko | 29.7 mg |
| Fish | Luciogobius guttatus | Flat-headed goby | 4 mg |
| Earthworm | Lumbricus terrestris | Common earthworm / Lob worm / Canadian nightcrawler / Grandaddy earthworm | 21.4 mg |
| Fish | Lumpenus lampretaeformis | Snakeblenny | 73.2 mg |
| Mammal | Lupulella adusta | Side-striped jackal / Schaeffia adusta | 51.4 g |
| Mammal | Lupulella mesomelas | Black-backed jackal | 51.3 g |
| Bird | Luscinia luscinia | Thrush nightingale / Sprosser | 710 mg |
| Bird | Luscinia megarhynchos | Common nightingale / Rufous nightingale | 728 mg |
| Fish | Lutjanus analis | Mutton snapper | 2.09 g |
| Fish | Lutjanus apodus | Schoolmaster snapper | 576 mg |
| Fish | Lutjanus argentimaculatus | Mangrove red snapper / Mangrove jack / Grey snapper / Creek red bream | 2.99 g |
| Fish | Lutjanus bohar | Two-spot red snapper / Red bass / Twinspot snapper / Bohar snapper | 3.15 g |
| Fish | Lutjanus buccanella | Blackfin snapper / Blackspot snapper / Blackfin red snapper / Gun-mouth backfin | 258 mg |
| Fish | Lutjanus fulvus | Blacktail snapper / Flametail snapper / Redmargined seaperch / Waigeu snapper | 726 mg |
| Fish | Lutjanus gibbus | Humpback red snapper / Paddletail / Paddletail snapper / Hunchback snapper | 1.59 g |
| Fish | Lutjanus griseus | Mangrove snapper / Gray snapper | 632 mg |
| Fish | Lutjanus kasmira | Common bluestripe snapper / Bluebanded snapper / Bluestripe sea perch / Fourline snapper | 707 mg |
| Fish | Lutjanus lemniscatus | Yellowstreaked snapper / Darktail snapper / Darktail seaperch / Maroon sea-perch | 601 mg |
| Fish | Lutjanus mahogoni | Mahogany snapper | 594 mg |
| Fish | Lutjanus monostigma | One-spot snapper / Onespot seaperch / Moses snapper | 1.72 g |
| Fish | Lutjanus notatus | Bluestriped snapper | 504 mg |
| Fish | Lutjanus rivulatus | Blubberlip snapper / Maori snapper / Blue-spotted seaperch / Maori bream | 520 mg |
| Fish | Lutjanus vitta | Brownstripe red snapper / Brownstripe snapper / Broadband seaperch / Brownstripe seaperch | 507 mg |
| Mammal | Lutra lutra | Eurasian otter / Common otter / European otter / Eurasian river otter | 41.3 g |
| Mammal | Lutreolina crassicaudata | Big lutrine opossum / Little water opossum / Thick-tailed opossum / Coligrueso | 3.41 g |
| Mammal | Lutrogale perspicillata | Smooth-coated otter | 62.9 g |
| Bird | Lybius torquatus | Black-collared barbet | 1.2 g |
| Mammal | Lycalopex culpaeus | Culpeo / Culpeo zorro / Andean zorro / Andean fox | 51.4 g |
| Mammal | Lycalopex griseus | South American gray fox / Patagonian fox / Chilla / Zorro gris | 42.5 g |
| Mammal | Lycalopex gymnocercus | Pampas fox / Grey pampean fox / Pampas zorro / Azara’s fox | 40 g |
| Mammal | Lycaon pictus | African wild dog / Painted dog / Cape hunting dog | 129 g |
| Bird | Lycocorax pyrrhopterus | Halmahera paradise-crow / Silky crow | 4.96 g |
| Reptile | Lygisaurus foliorum | Tree-base litter-skink | 25.1 mg |
| Reptile | Lygisaurus novaeguineae | – | 14.1 mg |
| Bird | Lymnocryptes minimus | Jack snipe / Jacksnipe | 973 mg |
| Bird | Lyncornis macrotis | Great eared nightjar | 1.51 g |
| Mammal | Lynx canadensis | Canada lynx / Canadian lynx | 70.2 g |
| Mammal | Lynx lynx | Eurasian lynx | 69.3 g |
| Mammal | Lynx pardinus | Iberian lynx | 78.3 g |
| Mammal | Lynx rufus | Bobcat / Wildcat / Bay lynx / Red lynx | 61.2 g |
| Bird | Lyrurus tetrix | Black grouse / Northern black grouse / Eurasian black grouse / Blackgame | 3.72 g |
| Mammal | Macaca arctoides | Stump-tailed macaque / Bear macaque | 101 g |
| Mammal | Macaca assamensis | Assam macaque / Assamese macaque | 92.8 g |
| Mammal | Macaca cyclopis | Formosan rock macaque / Formosan rock monkey / Taiwanese macaque | 82 g |
| Mammal | Macaca fascicularis | Crab-eating macaque / Long-tailed macaque / Cynomolgus macaque | 67.6 g |
| Mammal | Macaca fuscata | Japanese macaque / Snow monkey | 97.4 g |
| Mammal | Macaca hecki | Heck’s macaque | 94.6 g |
| Mammal | Macaca leonina | Northern pig-tailed macaque | 87.8 g |
| Mammal | Macaca maura | Moor macaque | 108 g |
| Mammal | Macaca mulatta | Rhesus macaque / Rhesus monkey | 95.4 g |
| Mammal | Macaca nemestrina | Southern pig-tailed macaque / Sundaland pig-tailed macaque / Sunda pig-tailed macaque / Beruk | 109 g |
| Mammal | Macaca nigra | Celebes crested macaque / Crested black macaque / Sulawesi crested macaque / Black ape | 95 g |
| Mammal | Macaca ochreata | Booted macaque | 99.7 g |
| Mammal | Macaca radiata | Bonnet macaque / Zati | 74.6 g |
| Mammal | Macaca silenus | Lion-tailed macaque / Wanderoo | 83.9 g |
| Mammal | Macaca sinica | Toque macaque | 69.5 g |
| Mammal | Macaca sylvanus | Barbary macaque | 92.8 g |
| Mammal | Macaca tonkeana | Tonkean black macaque / Tonkean macaque | 93.7 g |
| Bird | Macheiramphus alcinus | Bat hawk | 6.84 g |
| Bird | Machetornis rixosa | Cattle tyrant | 995 mg |
| Fish | Macolor niger | Black and white snapper / Black and white seaperch / Black snapper | 2.72 g |
| Reptile | Macrochelys temminckii | Alligator snapping turtle | 1.16 g |
| Mammal | Macroderma gigas | Ghost bat | 1.7 g |
| Fish | Macrodontogobius wilburi | Largetooth goby / Wilbur’s goby | 9.35 mg |
| Insect | Macroglossum stellatarum | Hummingbird hawk-moth | 0.477 mg |
| Mammal | Macroglossus minimus | Long-tongued nectar bat / Northern blossom bat / Honey nectar bat / Least blossom-bat | 607 mg |
| Mammal | Macroglossus sobrinus | Long-tongued fruit bat | 692 mg |
| Bird | Macronectes giganteus | Southern giant petrel / Antarctic giant petrel / Giant fulmar / Stinker | 18.3 g |
| Mammal | Macronycteris commersoni | Commerson’s roundleaf bat / Commerson’s leaf-nosed bat | 745 mg |
| Fish | Macropharyngodon geoffroy | Geoffroy’s wrasse | 110 mg |
| Mammal | Macrophyllum macrophyllum | Long-legged bat | 321 mg |
| Mammal | Macropus fuliginosus | Western grey kangaroo / Western grey giant kangaroo / Black-faced kangaroo / Mallee kangaroo | 59 g |
| Mammal | Macropus giganteus | Eastern grey kangaroo / Great grey kangaroo / Forester kangaroo | 64.3 g |
| Bird | Macropygia amboinensis | Amboyna cuckoo-dove | 1.54 g |
| Bird | Macropygia nigrirostris | Bar-tailed cuckoo-dove / Black-billed cuckoo-dove | 1.19 g |
| Bird | Macropygia phasianella | Brown cuckoo-dove | 1.51 g |
| Bird | Macropygia unchall | Barred cuckoo-dove | 1.53 g |
| Mammal | Macrotis lagotis | Greater bilby / Bilby / Dalgyte / Pinkie | 6.69 g |
| Mammal | Macrotis leucura | Lesser bilby / Yallara / Lesser rabbit-eared bandicoot / White-tailed rabbit-eared bandicoot | 4.38 g |
| Mammal | Macrotus californicus | California leaf-nosed bat | 390 mg |
| Fish | Macrourus berglax | Roughhead grenadier / Onion-eye grenadier | 1.22 g |
| Mammal | Madoqua kirkii | Kirk’s dik-dik | 36.3 g |
| Mammal | Makalata didelphoides | Brazilian spiny tree rat | 3.45 g |
| Mammal | Makalata macrura | Long-tailed armored tree-rat | 3.89 g |
| Fish | Malacanthus brevirostris | Quakerfish / Flagtail blanquillo / False whiting / Stripetail tilefish | 57.3 mg |
| Fish | Malacocephalus laevis | Softhead grenadier | 646 mg |
| Mammal | Malacomys edwardsi | Edward’s swamp rat | 1.18 g |
| Bird | Malaconotus cruentus | Fiery-breasted bushshrike | 2.36 g |
| Bird | Malacoptila panamensis | White-whiskered puffbird / White-whiskered soft-wing / Brown puffbird | 1.19 g |
| Bird | Malacorhynchus membranaceus | Pink-eared duck | 2.91 g |
| Fish | Malacosteus niger | Stoplight loosejaw / Northern stoplight loosejaw / Lightless loosejaw / Black loosejaw | 16 mg |
| Fish | Mallotus villosus | Capelin / Caplin | 103 mg |
| Fish | Malthopsis mitrigera | Two-spine triangular batfish | 1.86 mg |
| Bird | Malurus alboscapulatus | White-shouldered fairywren | 487 mg |
| Bird | Malurus coronatus | Purple-crowned fairywren | 495 mg |
| Bird | Malurus cyaneus | Superb fairywren | 488 mg |
| Bird | Malurus elegans | Red-winged fairywren | 590 mg |
| Bird | Malurus lamberti | Variegated fairywren | 478 mg |
| Bird | Malurus leucopterus | White-winged fairywren | 402 mg |
| Bird | Malurus melanocephalus | Red-backed fairywren | 468 mg |
| Bird | Malurus pulcherrimus | Blue-breasted fairywren / Blue-breasted wren | 438 mg |
| Bird | Malurus splendens | Splendid fairywren / Splendid wren / Blue wren | 468 mg |
| Insect | Mamestra brassicae | Cabbage moth | 0.008 mg |
| Bird | Manacus candei | White-collared manakin | 590 mg |
| Bird | Manacus manacus | White-bearded manakin | 611 mg |
| Bird | Manacus vitellinus | Golden-collared manakin | 641 mg |
| Mammal | Mandrillus leucophaeus | Drill | 167 g |
| Mammal | Mandrillus sphinx | Mandrill | 164 g |
| Insect | Manduca sexta | Carolina sphinx moth / Tobacco hawk moth | 0.914 mg |
| Mammal | Manis javanica | Sunda pangolin / Malayan pangolin / Javan pangolin | 13.7 g |
| Mammal | Manis pentadactyla | Chinese pangolin | 17.6 g |
| Bird | Manorina flavigula | Yellow-throated miner / White-rumped miner | 1.42 g |
| Bird | Manorina melanocephala | Noisy miner | 1.93 g |
| Bird | Manorina melanophrys | Bell miner / Bellbird | 1.18 g |
| Fish | Marcusenius moorii | Talagouga mormyrid | 423 mg |
| Fish | Marcusenius ntemensis | Ntem mormyrid | 559 mg |
| Fish | Marcusenius senegalensis | Trunkfish / Senegalese mormyrid | 534 mg |
| Fish | Marcusenius victoriae | Victoria stonebasher | 304 mg |
| Bird | Mareca americana | American wigeon / Baldpate | 4.14 g |
| Bird | Mareca penelope | Eurasian wigeon / European wigeon / Widgeon / Wigeon | 4.1 g |
| Bird | Mareca sibilatrix | Chiloé wigeon / Southern wigeon | 4.3 g |
| Bird | Mareca strepera | Gadwall | 4.3 g |
| Bird | Margarops fuscatus | Pearly-eyed thrasher | 2.43 g |
| Bird | Marmaronetta angustirostris | Marbled duck / Marbled teal | 3.5 g |
| Mammal | Marmosa demerarae | Woolly mouse opossum / Long-furred woolly mouse opossum | 1.24 g |
| Mammal | Marmosa mexicana | Mexican mouse opossum | 1.02 g |
| Mammal | Marmosa murina | Linnaeus’s mouse opossum / Common mouse opossum / Murine mouse opossum | 978 mg |
| Mammal | Marmosa robinsoni | Robinson’s mouse opossum | 713 mg |
| Mammal | Marmosa rubra | Red mouse opossum | 1.22 g |
| Mammal | Marmota baibacina | Gray marmot / Grey marmot / Altai marmot | 13.8 g |
| Mammal | Marmota bobak | Bobak marmot / Steppe marmot | 12.6 g |
| Mammal | Marmota broweri | Alaska marmot / Brooks Range marmot / Brower’s marmot | 13.9 g |
| Mammal | Marmota caligata | Hoary marmot | 14.6 g |
| Mammal | Marmota camtschatica | Black-capped marmot | 12.6 g |
| Mammal | Marmota caudata | Long-tailed marmot / Golden marmot | 14.3 g |
| Mammal | Marmota flaviventer | Yellow-bellied marmot / Rock chuck | 12.5 g |
| Mammal | Marmota himalayana | Himalayan marmot | 16.7 g |
| Mammal | Marmota marmota | Alpine marmot | 15.1 g |
| Mammal | Marmota menzbieri | Menzbier’s marmot | 11.4 g |
| Mammal | Marmota monax | Groundhog / Woodchuck / Chuck / Groundpig | 11.6 g |
| Mammal | Marmota olympus | Olympic marmot | 15.4 g |
| Mammal | Marmota sibirica | Tarbagan marmot | 15.9 g |
| Mammal | Marmota vancouverensis | Vancouver Island marmot | 13.7 g |
| Mammal | Martes americana | American marten / American pine marten | 15.8 g |
| Mammal | Martes flavigula | Yellow-throated marten | 34.1 g |
| Mammal | Martes foina | Beech marten / Stone marten / House marten / White breasted marten | 20.9 g |
| Mammal | Martes martes | European pine marten | 19 g |
| Mammal | Martes zibellina | Sable | 18.5 g |
| Mammal | Massoutiera mzabi | Mzab gundi | 2.32 g |
| Mammal | Mastomys coucha | Southern multimammate mouse / Southern African mastomys | 712 mg |
| Mammal | Mastomys natalensis | Natal multimammate mouse / Common African rat / Natal multimammate rat / African soft fur rat | 732 mg |
| Fish | Maurolicus muelleri | Mueller’s pearlside / Mueller’s bristle-mouth fish / Silvery lightfish | 12.7 mg |
| Mammal | Maxomys surifer | Red spiny rat / Indomalayan maxomys | 2.54 g |
| Mammal | Maxomys whiteheadi | Whitehead’s spiny rat | 1.62 g |
| Mammal | Mazama americana | Red brocket | 56 g |
| Bird | Mecocerculus leucophrys | White-throated tyrannulet | 499 mg |
| Bird | Megaceryle alcyon | Belted kingfisher | 2.57 g |
| Bird | Megaceryle torquata | Ringed kingfisher | 3.7 g |
| Fish | Megachasma pelagios | Megamouth shark | 19.8 g |
| Insect | Megachile apicalis | Apical leafcutter bee | 0.97 mg |
| Insect | Megachile centuncularis | Patchwork leafcutter bee | 1.42 mg |
| Insect | Megachile latimanus | Broad-handed leafcutter | 2.58 mg |
| Insect | Megachile ligniseca | Wood-carving leafcutter bee | 2.96 mg |
| Insect | Megachile mendica | Flat-tailed leafcutter bee | 2.45 mg |
| Insect | Megachile mucida | – | 1.84 mg |
| Insect | Megachile pugnata | Pugnacious leafcutter bee | 3 mg |
| Insect | Megachile relativa | Golden-tailed leafcutter bee | 1.64 mg |
| Insect | Megachile rotundata | Alfalfa leafcutting bee | 1.6 mg |
| Insect | Megachile texana | Texas leafcutter bee | 2.35 mg |
| Insect | Megachile willughbiella | Willughby’s leaf-cutter bee | 1.97 mg |
| Mammal | Megaderma lyra | Greater false vampire bat / Indian false vampire bat / Greater false-vampire | 887 mg |
| Mammal | Megaderma spasma | Lesser false vampire bat | 667 mg |
| Mammal | Megadontomys thomasi | Thomas’s giant deer mouse | 1.26 g |
| Mammal | Megaerops ecaudatus | Tailless fruit bat | 822 mg |
| Mammal | Megaerops niphanae | Ratanaworabhan’s fruit bat | 958 mg |
| Fish | Megalaspis cordyla | Torpedo scad / Hardtail scad / Finny scad / Finletted mackerel scad | 627 mg |
| Mammal | Megaloglossus woermanni | Woermann’s bat / Woermann’s long-tongued fruit bat | 680 mg |
| Bird | Megaloprepia magnifica | Wompoo fruit dove / Wompoo pigeon / Magnificent fruit dove | 2.25 g |
| Bird | Megalurus palustris | Striated grassbird | 1.18 g |
| Bird | Megapodius eremita | Melanesian scrubfowl / Melanesian megapode | 3.33 g |
| Bird | Megapodius freycinet | Dusky megapode / Common megapode / Dusky scrubfowl | 3.92 g |
| Mammal | Megaptera novaeangliae | Humpback whale | 6.14 kg |
| Bird | Megarynchus pitangua | Boat-billed flycatcher | 1.21 g |
| Bird | Megascops asio | Eastern screech owl | 5.34 g |
| Bird | Megascops choliba | Tropical screech owl | 3.17 g |
| Fish | Meiacanthus anema | Threadless blenny | 7.6 mg |
| Fish | Meiacanthus atrodorsalis | Forktail blenny / Eyelash harptail-blenny / Poison-fang blenny / Yellowtail poison-fang blenny | 15.9 mg |
| Fish | Meiacanthus nigrolineatus | Blackline fangblenny | 20.1 mg |
| Bird | Melampitta lugubris | Lesser melampitta | 2.18 g |
| Bird | Melanerpes aurifrons | Golden-fronted woodpecker | 2.24 g |
| Bird | Melanerpes carolinus | Red-bellied woodpecker | 2.24 g |
| Bird | Melanerpes erythrocephalus | Red-headed woodpecker | 1.84 g |
| Bird | Melanerpes formicivorus | Acorn woodpecker | 2.28 g |
| Bird | Melanerpes lewis | Lewis’s woodpecker | 2.3 g |
| Bird | Melanerpes striatus | Hispaniolan woodpecker | 2.11 g |
| Bird | Melanerpes superciliaris | West Indian woodpecker | 2.6 g |
| Bird | Melanitta deglandi | White-winged scoter | 6.91 g |
| Bird | Melanitta fusca | Velvet scoter | 7.09 g |
| Bird | Melanitta nigra | Common scoter | 5.87 g |
| Bird | Melanitta perspicillata | Surf scoter | 5.91 g |
| Bird | Melanocharis crassirostris | Thick-billed berrypecker | 580 mg |
| Bird | Melanocharis nigra | Black berrypecker | 559 mg |
| Bird | Melanocharis striativentris | Streaked berrypecker | 704 mg |
| Bird | Melanocorypha calandra | Calandra lark / European calandra-lark | 1.36 g |
| Bird | Melanodryas cucullata | Hooded robin | 829 mg |
| Bird | Melanodryas cyanus | Slaty robin / Blue-grey robin | 995 mg |
| Bird | Melanodryas pulverulenta | Mangrove robin | 860 mg |
| Bird | Melanodryas vittata | Dusky robin | 1.04 g |
| Fish | Melanogrammus aeglefinus | Haddock | 1.81 g |
| Bird | Melanoperdix niger | Black partridge / Black wood partridge | 1.98 g |
| Insect | Melanoplus femurrubrum | Red-legged grasshopper | 2.33 mg |
| Bird | Melanoptila glabrirostris | Black catbird | 1.24 g |
| Bird | Melanorectes nigrescens | Black pitohui / Black whistler / Dusky pitohui | 2.07 g |
| Bird | Meleagris gallopavo | Wild turkey | 6.78 g |
| Bird | Meleagris ocellata | Ocellated turkey | 6.68 g |
| Mammal | Meles meles | European badger / Eurasian badger / Badger | 48.1 g |
| Fish | Melichthys vidua | Pinktail triggerfish | 341 mg |
| Bird | Melidectes torquatus | Ornate melidectes / Ornate honeyeater | 1.5 g |
| Bird | Melidora macrorrhina | Hook-billed kingfisher | 2.38 g |
| Bird | Melierax canorus | Pale chanting goshawk | 6.96 g |
| Bird | Melilestes megarhynchus | Long-billed honeyeater | 1.32 g |
| Bird | Meliphaga gracilis | Graceful honeyeater | 673 mg |
| Bird | Meliphaga lewinii | Lewin’s honeyeater | 1.21 g |
| Bird | Meliphaga notata | Yellow-spotted honeyeater / Lesser lewin | 901 mg |
| Bird | Melipotes fumigatus | Common smoky honeyeater | 1.61 g |
| Insect | Melissodes bimaculatus | Two-spotted longhorn | 1.82 mg |
| Insect | Melissodes desponsus | Eastern thistle longhorn bee | 1.66 mg |
| Bird | Melithreptus albogularis | White-throated honeyeater | 651 mg |
| Bird | Melithreptus brevirostris | Brown-headed honeyeater | 702 mg |
| Bird | Melithreptus lunatus | White-naped honeyeater | 621 mg |
| Bird | Melithreptus validirostris | Strong-billed honeyeater | 1.33 g |
| Bird | Mellisuga minima | Vervain hummingbird | 160 mg |
| Mammal | Mellivora capensis | Honey badger / Ratel | 79.5 g |
| Bird | Melloria quoyi | Black butcherbird | 3.68 g |
| Mammal | Melogale moschata | Chinese ferret-badger / Small-toothed ferret-badger | 15.1 g |
| Mammal | Melogale personata | Burmese ferret-badger / Large-toothed ferret-badger | 61.4 g |
| Mammal | Melomys cervinipes | Fawn-footed mosaic-tailed rat / Fawn-footed melomys | 1.31 g |
| Mammal | Melomys rufescens | Black-tailed mosaic-tailed rat / Black-tailed melomys | 1.29 g |
| Mammal | Melonycteris melanops | Black-bellied fruit bat | 1.29 g |
| Mammal | Melonycteris woodfordi | Woodford’s fruit bat / Orange fruit bat | 1.02 g |
| Bird | Melopsittacus undulatus | Budgerigar / Common parakeet / Shell parakeet / Budgie | 1.44 g |
| Bird | Melopyrrha nigra | Cuban bullfinch | 870 mg |
| Bird | Melopyrrha violacea | Greater Antillean bullfinch | 1.2 g |
| Bird | Melospiza georgiana | Swamp sparrow | 840 mg |
| Bird | Melospiza melodia | Song sparrow | 1.01 g |
| Mammal | Melursus ursinus | Sloth bear / Indian bear | 288 g |
| Fish | Mene maculata | Moonfish | 222 mg |
| Bird | Menelikornis leucotis | White-cheeked turaco | 3.47 g |
| Mammal | Meniscotherium | – | 15 g |
| Bird | Menura novaehollandiae | Superb lyrebird | 11 g |
| Mammal | Mephitis macroura | Hooded skunk | 9.5 g |
| Mammal | Mephitis mephitis | Striped skunk | 10.1 g |
| Bird | Mergellus albellus | Smew | 4.4 g |
| Bird | Mergus merganser | Common merganser / Goosander | 6.34 g |
| Bird | Mergus serrator | Red-breasted merganser | 5.12 g |
| Mammal | Meriones crassus | Sundevall’s jird | 1.36 g |
| Mammal | Meriones hurrianae | Indian desert jird / Indian desert gerbil | 970 mg |
| Mammal | Meriones unguiculatus | Mongolian gerbil / Mongolian jird | 1.07 g |
| Fish | Merlangius merlangus | Whiting / Merling | 573 mg |
| Fish | Merluccius merluccius | European hake / Cornish salmon / Herring hake | 1.41 g |
| Bird | Merops albicollis | White-throated bee-eater | 530 mg |
| Bird | Merops apiaster | European bee-eater | 855 mg |
| Bird | Merops nubicus | Northern carmine bee-eater | 900 mg |
| Bird | Merops orientalis | Asian green bee-eater / Little green bee-eater / Green bee-eater | 497 mg |
| Bird | Merops ornatus | Rainbow bee-eater | 642 mg |
| Bird | Merops pusillus | Little bee-eater | 425 mg |
| Mammal | Mesechinus dauuricus | Daurian hedgehog | 2.9 g |
| Bird | Mesembrinibis cayennensis | Green ibis / Cayenne ibis | 6.57 g |
| Mammal | Mesembriomys gouldii | Black-footed tree-rat / Djintamoonga | 4.59 g |
| Mammal | Mesocricetus auratus | Golden hamster / Syrian hamster | 1.05 g |
| Mammal | Mesomys hispidus | Ferreira’s spiny tree-rat | 2.64 g |
| Mammal | Mesophylla macconnelli | MacConnell’s bat | 345 mg |
| Mammal | Mesoplodon densirostris | Blainville’s beaked whale / Dense-beaked whale | 1.44 kg |
| Mammal | Mesoplodon europaeus | Gervais’s beaked whale / Antillean beaked whale / Gulf Stream beaked whale / European beaked whale | 2.15 kg |
| Mammal | Mesoplodon mirus | True’s beaked whale | 2.36 kg |
| Amphibian | Mesotriton alpestris | Alpine newt | 14.2 mg |
| Mammal | Metachirus nudicaudatus | Brown four-eyed opossum | 3.56 g |
| Mammal | Micaelamys namaquensis | Namaqua rock rat | 890 mg |
| Mammal | Mico argentatus | Silvery marmoset | 8.03 g |
| Mammal | Mico humeralifer | Santarem marmoset / Black and white tassel-ear marmoset | 8.35 g |
| Bird | Micrastur semitorquatus | Collared forest falcon | 6.22 g |
| Bird | Micrathene whitneyi | Elf owl | 1.45 g |
| Bird | Microcarbo africanus | Reed cormorant / Long-tailed cormorant | 4.69 g |
| Bird | Microcarbo melanoleucos | Little pied cormorant / Little shag / Kawaupaka | 5.53 g |
| Bird | Microcarbo pygmaeus | Pygmy cormorant | 4.7 g |
| Mammal | Microcebus murinus | Gray mouse lemur / Grey mouse lemur / Lesser mouse lemur | 1.78 g |
| Mammal | Microcebus rufus | Brown mouse lemur / Rufous mouse lemur / Eastern rufous mouse lemur / Red mouse lemur | 1.75 g |
| Fish | Microdesmus retropinnis | Rearfin wormfish | 2.74 mg |
| Mammal | Microdipodops megacephalus | Dark kangaroo mouse / Owyhee River kangaroo mouse | 552 mg |
| Mammal | Microdipodops pallidus | Pale kangaroo mouse / Soda Spring Valley kangaroo mouse | 550 mg |
| Bird | Microeca fascinans | Jacky winter | 560 mg |
| Bird | Microeca flavigaster | Lemon-bellied flyrobin / Lemon-bellied flycatcher | 529 mg |
| Mammal | Microgale cowani | Cowan’s shrew tenrec | 445 mg |
| Mammal | Microgale mergulus | Web-footed tenrec / Malagasy otter shrew / Aquatic tenrec | 1.08 g |
| Fish | Microgobius gulosus | Clown goby | 8.72 mg |
| Bird | Microhierax erythrogenys | Philippine falconet | 1.45 g |
| Bird | Microhierax fringillarius | Black-thighed falconet | 1.2 g |
| Amphibian | Microhyla berdmorei | Berdmore’s chorus frog / Berdmore’s narrow-mouthed frog / Burmese microhylid frog / Large pygmy frog | 15.7 mg |
| Amphibian | Microhyla butleri | Painted chorus frog / Butler’s narrow-mouthed toad / Butler’s pigmy frog / Butler’s rice frog | 8.93 mg |
| Amphibian | Microhyla heymonsi | Dark-sided chorus frog / Taiwan rice frog | 9.17 mg |
| Amphibian | Microhyla mixtura | Mixtured pygmy frog | 4.3 mg |
| Amphibian | Microhyla ornata | Ornate narrow-mouthed frog / Ornate narrow-mouthed toad / Ornamented pygmy frog | 14.3 mg |
| Amphibian | Microhyla pulchra | Beautiful pygmy frog / Guangdong rice frog / Marbled pygmy frog | 8.6 mg |
| Fish | Micromesistius poutassou | Blue whiting | 561 mg |
| Mammal | Micromys minutus | Harvest mouse | 293 mg |
| Mammal | Micronycteris megalotis | Little big-eared bat | 274 mg |
| Mammal | Micronycteris minuta | White-bellied big-eared bat | 286 mg |
| Mammal | Micronycteris schmidtorum | Schmidts’s big-eared bat | 308 mg |
| Mammal | Microperoryctes longicauda | Striped bandicoot | 3.88 g |
| Fish | Microphis brachyurus | Short-tailed pipefish | 10.9 mg |
| Mammal | Micropotamogale lamottei | Nimba otter shrew | 754 mg |
| Bird | Micropsitta pusio | Buff-faced pygmy parrot | 1.02 g |
| Mammal | Micropteropus pusillus | Peters’s dwarf epauletted fruit bat | 820 mg |
| Fish | Microspathodon chrysurus | Yellowtail damselfish | 198 mg |
| Mammal | Microtus agrestis | Short-tailed field vole / Short-tailed vole / Field vole | 736 mg |
| Mammal | Microtus arvalis | Common vole | 548 mg |
| Mammal | Microtus californicus | California vole / California meadow mouse | 785 mg |
| Mammal | Microtus drummondii | Western meadow vole | 660 mg |
| Mammal | Microtus guentheri | Günther’s vole / Levant vole | 693 mg |
| Mammal | Microtus longicaudus | Long-tailed vole / San Bernardino long-tailed vole | 700 mg |
| Mammal | Microtus montanus | Montane vole | 690 mg |
| Mammal | Microtus ochrogaster | Prairie vole | 708 mg |
| Mammal | Microtus oregoni | Creeping vole / Oregon meadow mouse | 520 mg |
| Mammal | Microtus pennsylvanicus | Eastern meadow vole | 756 mg |
| Mammal | Microtus pinetorum | Woodland vole / Pine vole | 570 mg |
| Mammal | Microtus townsendii | Townsend’s vole | 880 mg |
| Amphibian | Micryletta inornata | Deli paddy frog / False Ornate narrow-mouthed frog / Deli little pygmy / Inornate froglet | 11.7 mg |
| Bird | Milvus migrans | Black kite / Fire kite | 6.31 g |
| Bird | Milvus milvus | Red kite | 7.65 g |
| Bird | Mimus polyglottos | Northern mockingbird | 1.44 g |
| Mammal | Miniopterus australis | Little bent-wing bat / Little long-fingered bat | 170 mg |
| Mammal | Miniopterus fuscus | Southeast Asian long-fingered bat | 265 mg |
| Mammal | Miniopterus inflatus | Greater long-fingered bat | 327 mg |
| Mammal | Miniopterus magnater | Western bent-winged bat | 324 mg |
| Mammal | Miniopterus medius | Intermediate long-fingered bat | 271 mg |
| Mammal | Miniopterus pusillus | Small bent-winged bat | 216 mg |
| Mammal | Miniopterus schreibersii | Common bent-wing bat / Schreibers’s long-fingered bat / Schreibers’s bat | 280 mg |
| Mammal | Miniopterus tristis | Great bent-winged bat | 333 mg |
| Bird | Minla ignotincta | Red-tailed minla | 738 mg |
| Bird | Mino dumontii | Yellow-faced myna | 3.09 g |
| Fish | Minous monodactylus | Grey stingfish / Grey goblinfish | 32 mg |
| Bird | Mionectes oleagineus | Ochre-bellied flycatcher | 468 mg |
| Mammal | Miopithecus ogouensis | Gabon talapoin / Northern talapoin | 37.4 g |
| Mammal | Miopithecus talapoin | Angolan talapoin / Southern talapoin | 37.7 g |
| Bird | Mirafra javanica | Singing bush lark / Horsfield’s bush lark | 758 mg |
| Mammal | Mirounga angustirostris | Northern elephant seal / Northern sea elephant | 670 g |
| Mammal | Mirounga leonina | Southern elephant seal | 1.26 kg |
| Mammal | Mirza coquereli | Coquerel’s giant mouse lemur / Coquerel’s dwarf lemur / Southern giant mouse lemur | 5.86 g |
| Insect | Mischocyttarus mastigophorus | – | 0.26 mg |
| Bird | Mitrephanes phaeocercus | Northern tufted flycatcher / Tufted flycatcher | 331 mg |
| Bird | Mitrospingus cassinii | Dusky-faced tanager | 1.36 g |
| Amphibian | Mixophyes fasciolatus | Great barred frog | 111 mg |
| Bird | Mixornis gularis | Pin-striped tit-babbler / Yellow-breasted babbler | 672 mg |
| Bird | Mniotilta varia | Black-and-white warbler | 425 mg |
| Fish | Mobula birostris | Giant oceanic manta ray / Giant manta ray / Oceanic manta ray | 122 g |
| Fish | Mobula japanica | Spinetail mobula / Spinetail devil ray / Japanese mobula ray | 55.4 g |
| Fish | Mobula munkiana | Manta de monk / Munk’s devil ray / Pygmy devil ray / Smoothtail mobula | 20 g |
| Fish | Mobula tarapacana | Chilean devil ray / Box ray / Greater Guinean mobula / Sicklefin devil ray | 122 g |
| Fish | Mobula thurstoni | Bentfin devil ray / Lesser devil ray / Smoothtail devil ray / Smoothtail mobula | 62.5 g |
| Reptile | Mochlus sundevallii | Peters’ eyelid skink / Peters’ writhing skink / Sundevall’s writhing skink | 31.9 mg |
| Fish | Mogurnda mogurnda | Northern trout gudgeon / Northern purple-spotted gudgeon | 160 mg |
| Bird | Mohoua albicilla | Whitehead | 710 mg |
| Bird | Mohoua novaeseelandiae | Pīpipi / Brown creeper / New Zealand creeper / New Zealand titmouse | 602 mg |
| Bird | Mohoua ochrocephala | Yellowhead / Mohua | 735 mg |
| Fish | Mola mola | Ocean sunfish / Common mola | 922 mg |
| Reptile | Moloch horridus | Thorny devil / Mountain devil / Thorny lizard / Thorny dragon | 98.5 mg |
| Mammal | Molossops temminckii | Dwarf dog-faced bat | 181 mg |
| Mammal | Molossus molossus | Velvety free-tailed bat | 272 mg |
| Mammal | Molossus rufus | Black mastiff bat | 480 mg |
| Bird | Molothrus ater | Brown-headed cowbird | 2.09 g |
| Bird | Molothrus oryzivorus | Giant cowbird | 3.25 g |
| Fish | Molva dypterygia | Blue ling | 1.77 g |
| Fish | Molva macrophthalma | Spanish ling / Mediterranean ling / Even blue ling | 1.43 g |
| Fish | Molva molva | Common ling / White ling | 2.09 g |
| Bird | Momotus momota | Amazonian motmot | 2.28 g |
| Bird | Monachella muelleriana | Torrent flyrobin / Torrent robin | 777 mg |
| Mammal | Monachus monachus | Mediterranean monk seal | 480 g |
| Bird | Monarcha melanopsis | Black-faced monarch | 952 mg |
| Bird | Monasa nigrifrons | Black-fronted nunbird | 1.57 g |
| Bird | Monias benschi | Subdesert mesite | 2.07 g |
| Mammal | Monodelphis brevicaudata | Northern red-sided opossum / Guianan short-tailed opossum | 916 mg |
| Mammal | Monodon monoceros | Narwhal | 2.99 kg |
| Insect | Monomorium floricola | Bicolored trailing ant / Flower ant | 0.006 mg |
| Insect | Monomorium trageri | – | 0.01 mg |
| Mammal | Monophyllus plethodon | Insular single leaf bat / Lesser Antillean long-tongued bat | 413 mg |
| Fish | Monotaxis grandoculis | Humpnose big-eye bream / Bigeye barenose / Bigeye bream / Bigeye emperor | 888 mg |
| Bird | Monticola saxatilis | Common rock thrush / Rufous-tailed rock thrush | 1.34 g |
| Bird | Monticola solitarius | Blue rock thrush | 1.36 g |
| Bird | Montifringilla nivalis | White-winged snowfinch | 1.09 g |
| Reptile | Montivipera xanthina | Rock viper / Coastal viper / Ottoman viper / Turkish viper | 203 mg |
| Mammal | Mops condylurus | Angolan free-tailed bat | 422 mg |
| Mammal | Mops jobensis | Northern freetail bat | 360 mg |
| Mammal | Mops leucostigma | Malagasy white-bellied free-tailed bat | 390 mg |
| Mammal | Mops mops | Malayan free-tailed bat | 473 mg |
| Mammal | Mops niveiventer | White-bellied free-tailed bat | 432 mg |
| Mammal | Mops plicatus | Wrinkle-lipped free-tailed bat | 338 mg |
| Mammal | Mops pumilus | Little free-tailed bat | 282 mg |
| Fish | Mora moro | Common mora / Goodly-eyed cod / Googly-eyed cod / Ribaldo | 836 mg |
| Fish | Mordacia lapicida | Chilean lamprey / Lamprea de agua dulce | 8.7 mg |
| Fish | Mordacia mordax | Short-headed lamprey / Australian lamprey / Murray lamprey | 17.1 mg |
| Fish | Mordacia praecox | Australian brook lamprey / Nonparasitic lamprey | 6.1 mg |
| Reptile | Morethia boulengeri | South-eastern Morethia skink / Boulenger’s snake-eyed skink / Boulenger’s Morethia / Boulenger’s skink | 21.1 mg |
| Mammal | Mormoops megalophylla | Ghost-faced bat | 410 mg |
| Mammal | Mormopterus jugularis | Peters’s wrinkle-lipped bat / Peters’s goblin bat | 220 mg |
| Fish | Mormyrops anguilloides | Cornish jack | 414 mg |
| Fish | Mormyrops nigricans | Kutu mormyrid | 786 mg |
| Fish | Mormyrops zanclirostris | – | 330 mg |
| Fish | Mormyrus kannume | Elephant-snout fish | 4.32 g |
| Fish | Mormyrus tapirus | – | 2.72 g |
| Bird | Morococcyx erythropygus | Lesser ground cuckoo | 1.33 g |
| Bird | Morus bassanus | Northern gannet | 19.3 g |
| Bird | Morus serrator | Australasian gannet / Australian gannet / Tākapu | 10.6 g |
| Mammal | Moschiola meminna | Sri Lankan spotted chevrotain / White-spotted chevrotain | 16.9 g |
| Bird | Motacilla alba | White wagtail | 572 mg |
| Bird | Motacilla cinerea | Grey wagtail | 526 mg |
| Bird | Motacilla flava | Western yellow wagtail | 522 mg |
| Fish | Mugil cephalus | Striped mullet / Common mullet / Flathead mullet / Flathead grey mullet | 506 mg |
| Fish | Mugilogobius cavifrons | Mangrove goby | 6.23 mg |
| Bird | Mulleripicus fulvus | Ashy woodpecker | 4.59 g |
| Fish | Mulloidichthys flavolineatus | Yellowstripe goatfish | 887 mg |
| Fish | Mullus barbatus | Red mullet | 924 mg |
| Fish | Mullus surmuletus | Striped red mullet / Surmullet | 611 mg |
| Mammal | Mungos mungo | Banded mongoose | 10.6 g |
| Mammal | Muntiacus muntjak | Southern red muntjac / Common muntjac / Indian muntjac | 124 g |
| Fish | Muraenolepis marmorata | Marbled moray cod | 323 mg |
| Mammal | Murexia longicaudata | Short-furred dasyure / Short-haired marsupial mouse | 1.71 g |
| Mammal | Murexia melanurus | Black-tailed dasyure | 710 mg |
| Mammal | Murexia naso | Long-nosed dasyure | 784 mg |
| Mammal | Murexia rothschildi | Broad-striped dasyure | 1.09 g |
| Mammal | Murina cyclotis | Round-eared tube-nosed bat | 265 mg |
| Mammal | Murina huttoni | Hutton’s tube-nosed bat | 258 mg |
| Mammal | Murina tubinaris | Scully’s tube-Nosed bat | 217 mg |
| Mammal | Mus booduga | Little Indian field mouse | 310 mg |
| Mammal | Mus minutoides | African pygmy mouse | 270 mg |
| Mammal | Mus musculoides | Temminck’s mouse | 665 mg |
| Mammal | Mus musculus | House mouse | 434 mg |
| Mammal | Mus platythrix | Flat-haired mouse / Indian brown spiny mouse | 500 mg |
| Mammal | Muscardinus avellanarius | Hazel dormouse / Common dormouse | 500 mg |
| Bird | Muscicapa striata | Spotted flycatcher | 492 mg |
| Bird | Muscisaxicola alpinus | Paramo ground tyrant / Plain-capped ground-tyrant | 808 mg |
| Mammal | Mustela altaica | Mountain weasel / Pale weasel / Altai weasel / Solongoi | 4.48 g |
| Mammal | Mustela erminea | Stoat / Eurasian ermine / Ermine | 4.28 g |
| Mammal | Mustela lutreola | European mink / Russian mink / Eurasian mink | 8.5 g |
| Mammal | Mustela lutreolina | Indonesian mountain weasel | 8.5 g |
| Mammal | Mustela nigripes | Black-footed ferret / American polecat / Prairie dog hunter | 6.87 g |
| Mammal | Mustela nivalis | Least weasel / Common weasel / Little weasel | 1.99 g |
| Mammal | Mustela putorius | European polecat / Black polecat / Forest polecat | 7.56 g |
| Mammal | Mustela sibirica | Siberian weasel / Kolonok | 6.38 g |
| Fish | Mustelus antarcticus | Gummy shark / Australian smooth hound / Sweet william / Smooth dog-shark | 3.84 g |
| Fish | Mustelus asterias | Starry smooth-hound | 3.09 g |
| Fish | Mustelus canis | Dusky smooth-hound / Smooth dogfish / Dog shark | 8.31 g |
| Fish | Mustelus lenticulatus | Spotted estuary smooth-hound / Gummy shark / Lemonfish / Spotted dogfish | 5.97 g |
| Bird | Myadestes genibarbis | Rufous-throated solitaire | 952 mg |
| Bird | Myadestes townsendi | Townsend’s solitaire | 1.05 g |
| Insect | Mycocepurus smithii | – | 0.022 mg |
| Bird | Mycteria americana | Wood stork | 18.9 g |
| Bird | Mycteria ibis | Yellow-billed stork | 15.4 g |
| Fish | Mycteroperca bonaci | Black grouper / Black rockfish / Marbled rockfish | 1.98 g |
| Fish | Myctophum punctatum | Spotted lanternfish / Spotted lanterfish | 52.1 mg |
| Mammal | Mydaus javanensis | Sunda stink badger / Javan stink badger / Teledu / Malay stink badger | 19.5 g |
| Mammal | Mydaus marchei | Palawan stink badger / Pantot | 14.9 g |
| Bird | Myiagra alecto | Shining flycatcher | 758 mg |
| Bird | Myiagra caledonica | Melanesian flycatcher / Broad-billed flycatcher / New Caledonian flycatcher / Melanesian broadbill | 611 mg |
| Bird | Myiagra cyanoleuca | Satin flycatcher / Satin Myiagra / Satin Myiagra-flycatcher | 653 mg |
| Bird | Myiagra inquieta | Restless flycatcher / Restless myiagra / Razor grinder / Scissors grinder | 789 mg |
| Bird | Myiagra rubecula | Leaden flycatcher / Blue-coloured flycatcher / Leaden-coloured flycatcher / Leaden Myiagra | 559 mg |
| Bird | Myiarchus cinerascens | Ash-throated flycatcher | 799 mg |
| Bird | Myiarchus stolidus | Stolid flycatcher | 672 mg |
| Bird | Myiarchus tuberculifer | Dusky-capped flycatcher | 682 mg |
| Bird | Myiarchus tyrannulus | Brown-crested flycatcher | 1.02 g |
| Bird | Myiarchus validus | Rufous-tailed flycatcher | 1.24 g |
| Bird | Myiobius barbatus | Whiskered myiobius / Bearded flycatcher | 361 mg |
| Bird | Myioborus pictus | Painted redstart / Painted whitestart | 402 mg |
| Bird | Myiodynastes maculatus | Streaked flycatcher | 1.17 g |
| Bird | Myiomela leucura | White-tailed robin | 922 mg |
| Bird | Myiopagis cotta | Small Jamaican elaenia | 438 mg |
| Bird | Myiophobus fasciatus | Bran-colored flycatcher | 382 mg |
| Bird | Myiopsitta monachus | Monk parakeet / Monk parrot / Quaker parrot | 4.23 g |
| Bird | Myiothlypis fulvicauda | Buff-rumped warbler | 580 mg |
| Bird | Myiozetetes similis | Social flycatcher | 850 mg |
| Fish | Myliobatis freminvillei | Bullnose eagle ray / Bullnose ray | 13.5 g |
| Fish | Myliobatis tenuicaudatus | New Zealand eagle ray / Australian eagle ray | 5.09 g |
| Mammal | Myocastor coypus | Nutria / Coypu | 18 g |
| Mammal | Myoictis melas | Three-striped dasyure | 2.09 g |
| Fish | Myomyrus macrops | Ja River mormyrid | 437 mg |
| Mammal | Myomyscus verreauxii | Verreaux’s mouse / Verreaux’s white-footed rat | 680 mg |
| Mammal | Myonycteris angolensis | Angolan fruit bat / Angolan rousette / Silky bat | 1.76 g |
| Mammal | Myonycteris torquata | Little collared fruit bat | 1.12 g |
| Mammal | Myoprocta pratti | Green acouchi | 10.9 g |
| Mammal | Myopus schisticolor | Wood lemming | 560 mg |
| Mammal | Myotis adversus | Large-footed bat / Large-footed mouse-eared bat / Large-footed myotis | 255 mg |
| Mammal | Myotis albescens | Silver-tipped myotis | 126 mg |
| Mammal | Myotis altarium | Szechwan myotis | 240 mg |
| Mammal | Myotis annectans | Hairy-faced bat | 221 mg |
| Mammal | Myotis bechsteinii | Bechstein’s bat | 264 mg |
| Mammal | Myotis bocagii | Rufous mouse-eared bat | 205 mg |
| Mammal | Myotis dasycneme | Pond bat | 310 mg |
| Mammal | Myotis daubentonii | Daubenton’s bat / Daubenton’s myotis | 230 mg |
| Mammal | Myotis fortidens | Cinnamon myotis | 133 mg |
| Mammal | Myotis hasseltii | Lesser large-footed bat | 188 mg |
| Mammal | Myotis horsfieldii | Horsfield’s bat | 197 mg |
| Mammal | Myotis lucifugus | Little brown bat / Little brown myotis | 195 mg |
| Mammal | Myotis montivagus | Burmese whiskered myotis / Burmese whiskered bat | 170 mg |
| Mammal | Myotis muricola | Wall-roosting mouse-eared bat / Nepalese whiskered myotis | 125 mg |
| Mammal | Myotis myotis | Greater mouse-eared bat | 386 mg |
| Mammal | Myotis mystacinus | Whiskered bat | 159 mg |
| Mammal | Myotis nattereri | Natterer’s bat | 220 mg |
| Mammal | Myotis nigricans | Black myotis | 124 mg |
| Mammal | Myotis riparius | Riparian myotis | 173 mg |
| Mammal | Myotis siligorensis | Himalayan whiskered bat | 103 mg |
| Mammal | Myotis tricolor | Cape hairy bat / Little brown bat / Temminck’s mouse-eared bat / Cape myotis | 259 mg |
| Mammal | Myotis velifer | Cave myotis | 200 mg |
| Mammal | Myotis yumanensis | Yuma myotis | 130 mg |
| Fish | Myoxocephalus scorpius | Shorthorn sculpin / Bull-rout | 276 mg |
| Fish | Myripristis berndti | Blotcheye soldierfish | 209 mg |
| Fish | Myripristis chryseres | Yellowfin soldierfish | 302 mg |
| Fish | Myripristis jacobus | Blackbar soldierfish | 384 mg |
| Fish | Myripristis kuntee | Shoulderbar soldierfish | 280 mg |
| Fish | Myripristis murdjan | Pinecone soldierfish | 601 mg |
| Fish | Myripristis pralinia | Scarlet soldierfish | 413 mg |
| Fish | Myripristis violacea | Lattice soldierfish | 426 mg |
| Fish | Myripristis woodsi | Whitespot soldierfish | 593 mg |
| Insect | Myrmecia croslandi | – | 0.526 mg |
| Insect | Myrmecia gulosa | Red bull ant / Giant bull ant / Bull sharky shark ant / Bulldog Ant | 1.06 mg |
| Insect | Myrmecia midas | – | 1.22 mg |
| Insect | Myrmecia nigriceps | Black-headed bull ant | 1 mg |
| Insect | Myrmecia nigrocincta | Jumper ant / Jumping jack | 0.571 mg |
| Insect | Myrmecia pyriformis | Bull ant / Inch ant | 1.13 mg |
| Insect | Myrmecia tarsata | – | 0.893 mg |
| Mammal | Myrmecobius fasciatus | Numbat / Noombat / Walpurti | 4.33 g |
| Mammal | Myrmecophaga tridactyla | Giant anteater | 64.8 g |
| Bird | Myrmelastes leucostigma | Spot-winged antbird | 1.02 g |
| Insect | Myrmicocrypta ednaella | – | 0.023 mg |
| Bird | Myrmoderus ferrugineus | Ferruginous-backed antbird | 850 mg |
| Bird | Myrmotherula axillaris | White-flanked antwren | 402 mg |
| Spider | Mysmenopsis tengellacompa | – | 0.019 mg |
| Mammal | Mystromys albicaudatus | White-tailed rat / White-tailed mouse | 1.39 g |
| Fish | Myxine glutinosa | Atlantic hagfish | 15.7 mg |
| Bird | Myzomela obscura | Dusky myzomela / Dusky honeyeater | 529 mg |
| Bird | Myzomela sanguinolenta | Scarlet myzomela / Scarlet honeyeater | 351 mg |
| Reptile | Nactus pelagicus | Pacific slender-toed gecko / Pelagic gecko / Rock gecko | 33.8 mg |
| Reptile | Naja kaouthia | Monocled cobra / Monocellate cobra / Indian spitting cobra | 364 mg |
| Reptile | Naja melanoleuca | Forest cobra / Black cobra / Black and white-lipped cobra | 646 mg |
| Reptile | Naja siamensis | Siamese spitting cobra / Indochinese spitting cobra / Thai spitting cobra / Black and white spitting cobra | 379 mg |
| Mammal | Nandinia binotata | African palm civet / Two-spotted palm civet | 17.3 g |
| Mammal | Nanger dama | Dama gazelle / Addra gazelle / Mhorr gazelle | 150 g |
| Mammal | Nanger granti | Grant’s gazelle | 139 g |
| Fish | Nannobrachium atrum | Dusky lanternfish | 50.2 mg |
| Fish | Nannobrachium lineatum | – | 42.2 mg |
| Bird | Nannopsittaca panychlora | Tepui parrotlet | 1.5 g |
| Bird | Nannopsittacus gulielmitertii | Blue-fronted fig parrot / William’s fig parrot / King of Holland fig parrot | 1.59 g |
| Bird | Nannopterum auritum | Double-crested cormorant | 9.93 g |
| Bird | Nannopterum brasilianum | Neotropic cormorant / Olivaceous cormorant | 7.5 g |
| Mammal | Nannospalax ehrenbergi | Middle East blind mole-rat / Ehrenberg’s mole-rat | 1.2 g |
| Mammal | Nannospalax leucodon | Lesser blind mole-rat | 3 g |
| Amphibian | Nanorana parkeri | High Himalaya frog / Xizang Plateau frog / Parker’s slow frog / Mountain slow frog | 43.2 mg |
| Amphibian | Nanorana pleskei | Songpan slow frog / Pleske’s high altitude frog / Plateau frog | 22.7 mg |
| Amphibian | Nanorana quadranus | Kwang-yang Asian frog / Swelled vent frog | 59.1 mg |
| Amphibian | Nanorana sichuanensis | – | 152 mg |
| Amphibian | Nanorana ventripunctata | Yunnan slow frog / Spot-bellied plateau frog | 28.5 mg |
| Amphibian | Nanorana yunnanensis | Yunnan paa frog / Yunnan spiny frog / Bourret’s paa frog / Bourret’s frog | 78.8 mg |
| Mammal | Napaeozapus insignis | Woodland jumping mouse | 480 mg |
| Fish | Narcinops tasmaniensis | Tasmanian numbfish | 518 mg |
| Mammal | Nasalis larvatus | Proboscis monkey / Long-nosed monkey | 92.4 g |
| Fish | Naso brevirostris | Short-nosed unicornfish / Spotted unicornfish / Brown unicornfish / Lined unicornfish | 1.12 g |
| Fish | Naso hexacanthus | Sleek unicornfish / Blue-tail unicorn / Thorpe’s unicornfish / Blacktongue unicornfish | 666 mg |
| Fish | Naso lituratus | Clown unicornfish / Orangespined unicornfish / Orangespine unicornfish / Black-finned unicornfish | 733 mg |
| Fish | Naso thynnoides | Oneknife unicornfish / Oneknife unicorn / Thunny unicornfish / Singlespine unicornfish | 457 mg |
| Fish | Naso unicornis | Bluespine unicornfish / Short-nose unicornfish | 665 mg |
| Fish | Naso vlamingii | Bignose unicornfish / Scibbled unicornfish / Vlaming’s unicornfish / Zebra unicornfish | 1.35 g |
| Mammal | Nasua narica | White-nosed coati / Coatimundi / Gato solo / Pizote | 33.7 g |
| Mammal | Nasua nasua | South American coati / Ring-tailed coati / Brown-nosed coati | 33.4 g |
| Mammal | Natalus tumidirostris | Trinidadian funnel-eared bat | 245 mg |
| Reptile | Natrix maura | Viperine water snake / Viperine snake | 87 mg |
| Reptile | Natrix natrix | Grass snake / Ringed snake / Water snake | 106 mg |
| Fish | Nebrius ferrugineus | Tawny nurse shark | 15.2 g |
| Bird | Necrosyrtes monachus | Hooded vulture | 12.7 g |
| Fish | Nectamia savayensis | Samoan cardinalfish | 92 mg |
| Insect | Nectarinella championi | – | 0.117 mg |
| Amphibian | Necturus maculosus | Common mudpuppy | 114 mg |
| Fish | Negaprion acutidens | Sicklefin lemon shark / Sharptooth lemon shark | 10.1 g |
| Fish | Negaprion brevirostris | Lemon shark | 14 g |
| Fish | Nemanthias bicolor | Bicolor anthias / Yellowback basslet | 143 mg |
| Fish | Nematogobius brachynemus | – | 7.1 mg |
| Fish | Nematogobius maindron | – | 21.1 mg |
| Fish | Nemichthys scolopaceus | Slender snipe eel / Deep sea duck | 39.4 mg |
| Fish | Nemipterus furcosus | Fork-tailed threadfin bream / Rosy threadfin bream / Red butterfly bream | 684 mg |
| Fish | Nemipterus japonicus | Japanese threadfin bream | 305 mg |
| Bird | Neochen jubata | Orinoco goose | 6.01 g |
| Bird | Neochmia phaeton | Crimson finch | 518 mg |
| Bird | Neochmia temporalis | Red-browed finch | 520 mg |
| Insect | Neodiprion virginianus | – | 0.316 mg |
| Mammal | Neofelis nebulosa | Clouded leopard / Mainland clouded leopard | 68.7 g |
| Mammal | Neofiber alleni | Round-tailed muskrat / Florida water rat | 2.72 g |
| Mammal | Neogale frenata | Long-tailed weasel / Bridled weasel / Masked ermine / Big stoat | 4 g |
| Mammal | Neogale vison | American mink | 7.75 g |
| Fish | Neoglyphidodon nigroris | Black-and-gold chromis / Behn’s damsel | 124 mg |
| Fish | Neolamprologus brevis | – | 28 mg |
| Fish | Neolamprologus brichardi | Princess cichlid / Princess of Burundi / Lyretail cichlid / Fairy cichlid | 37 mg |
| Fish | Neolamprologus callipterus | – | 74 mg |
| Fish | Neolamprologus lemairii | – | 78.1 mg |
| Fish | Neolamprologus modestus | – | 89.3 mg |
| Fish | Neolamprologus multifasciatus | – | 11.7 mg |
| Fish | Neolamprologus ocellatus | – | 33.2 mg |
| Fish | Neolamprologus ornatipinnis | – | 29.1 mg |
| Fish | Neolamprologus pulcher | Daffodil cichlid / Fairy cichlid / Princess of Zambia / Lyretail cichlid | 34.6 mg |
| Fish | Neolamprologus savoryi | – | 43.6 mg |
| Fish | Neolamprologus sexfasciatus | – | 87.9 mg |
| Fish | Neolamprologus tetracanthus | Fourspine cichlid | 128 mg |
| Fish | Neolamprologus tretocephalus | – | 75 mg |
| Mammal | Neomonachus schauinslandi | Hawaiian monk seal | 370 g |
| Mammal | Neomonachus tropicalis | Caribbean monk seal / West Indian seal / Sea wolf | 460 g |
| Bird | Neomorphus geoffroyi | Rufous-vented ground cuckoo | 4.39 g |
| Mammal | Neomys fodiens | Eurasian water shrew / Water shrew | 300 mg |
| Fish | Neomyxus leuciscus | Acute-jawed mullet | 250 mg |
| Fish | Neoniphon argenteus | Clearfin squirrelfish / Silver squirrelfish | 269 mg |
| Fish | Neoniphon aurolineatus | Yellowstriped squirrelfish / Gold-lined squirrelfish | 623 mg |
| Fish | Neoniphon opercularis | Blackfin squirrelfish / Mouth-fin squirrelfish / Clearfin squirrelfish | 612 mg |
| Fish | Neoniphon sammara | Sammara squirrelfish / Blood-spot squirrelfish / Slender squirrelfish / Spotfin squirrelfish | 528 mg |
| Mammal | Neophascogale lorentzii | Speckled dasyure / Long-clawed marsupial mouse | 2.49 g |
| Bird | Neophema chrysostoma | Blue-winged parrot / Blue-banded parakeet / Blue-banded grass-parakeet | 1.68 g |
| Bird | Neophema elegans | Elegant parrot / Koolyederong | 1.33 g |
| Bird | Neophema petrophila | Rock parrot | 1.76 g |
| Bird | Neophema pulchella | Turquoise parrot | 1.34 g |
| Bird | Neophema splendida | Scarlet-chested parrot / Scarlet-breasted parrot / Orange-throated parrot / Splendid parrot | 1.33 g |
| Mammal | Neophoca cinerea | Australian sea lion / Australian sea-lion / Australian sealion | 389 g |
| Mammal | Neophocaena phocaenoides | Indo-Pacific finless porpoise | 468 g |
| Bird | Neophron percnopterus | Egyptian vulture / White scavenger vulture / Pharaoh’s chicken | 11 g |
| Fish | Neopomacentrus cyanomos | Regal demoiselle | 100 mg |
| Fish | Neopomacentrus miryae | Miry’s demoiselle | 144 mg |
| Insect | Neoponera villosa | Hairy panther ant / Greater Texas bullet ant / Giant hunting ant | 0.503 mg |
| Bird | Neopsephotus bourkii | Bourke’s parrot / Blue-vented parrot / Sundown parrot / Pink-bellied parrot | 1.28 g |
| Bird | Neopsittacus musschenbroekii | Yellow-billed lorikeet | 2.54 g |
| Bird | Neopsittacus pullicauda | Orange-billed lorikeet | 2.02 g |
| Mammal | Neoromicia flavescens | Yellow serotine | 190 mg |
| Bird | Neosericornis citreogularis | Yellow-throated scrubwren | 819 mg |
| Mammal | Neotamias amoenus | Yellow-pine chipmunk | 1.39 g |
| Mammal | Neotamias cinereicollis | Gray-collared chipmunk | 1.8 g |
| Mammal | Neotamias dorsalis | Cliff chipmunk | 1.99 g |
| Mammal | Neotamias minimus | Least chipmunk | 1.6 g |
| Mammal | Neotamias palmeri | Palmer’s chipmunk | 1.99 g |
| Mammal | Neotamias panamintinus | Panamint chipmunk | 1.83 g |
| Mammal | Neotamias quadrimaculatus | Long-eared chipmunk / Sacramento chipmunk / Four-banded chipmunk | 2.16 g |
| Mammal | Neotamias quadrivittatus | Colorado chipmunk | 1.7 g |
| Mammal | Neotamias speciosus | Lodgepole chipmunk / Tahoe chipmunk / Sequoia chipmunk / Mt. Pinos chipmunk | 1.87 g |
| Mammal | Neotamias townsendii | Townsend’s chipmunk | 2.44 g |
| Bird | Neotis denhami | Denham’s bustard / Stanley bustard / Stanley’s bustard | 12.7 g |
| Mammal | Neotoma albigula | White-throated woodrat | 2.17 g |
| Mammal | Neotoma cinerea | Bushy-tailed woodrat / Packrat | 2.66 g |
| Mammal | Neotoma floridana | Eastern woodrat / Florida woodrat / Bush rat | 3.03 g |
| Mammal | Neotoma fuscipes | Dusky-footed woodrat | 2.66 g |
| Mammal | Neotoma micropus | Southern Plains woodrat | 2.66 g |
| Fish | Neotrygon kuhlii | Kuhl’s maskray / Blue-spotted stingray / Blue-spotted maskray / Kuhl’s stingray | 10.8 g |
| Reptile | Nephrurus levis | Three-lined knob-tailed gecko / Common knob-tailed gecko / Smooth knob-tailed gecko | 83.4 mg |
| Reptile | Nerodia cyclopion | Green water snake | 209 mg |
| Reptile | Nerodia taxispilota | Brown water snake / Water-pilot / Aspic / False moccasin | 135 mg |
| Fish | Nerophis lumbriciformis | Worm pipefish | 3.4 mg |
| Bird | Nesofregetta fuliginosa | Polynesian storm petrel | 912 mg |
| Mammal | Nesogale dobsoni | Dobson’s shrew tenrec | 560 mg |
| Mammal | Nesogale talazaci | Talazac’s shrew tenrec | 728 mg |
| Bird | Nesophlox evelynae | Bahama woodstar / Bahama hummingbird | 173 mg |
| Bird | Nesophlox lyrura | Inagua woodstar / Lyre-tailed hummingbird | 173 mg |
| Bird | Nesoptilotis leucotis | White-eared honeyeater | 921 mg |
| Bird | Nesospingus speculiferus | Puerto Rican tanager | 1.48 g |
| Mammal | Nesotragus moschatus | Suni | 32.4 g |
| Bird | Nesotriccus murinus | Mouse-colored tyrannulet | 382 mg |
| Bird | Nestor meridionalis | New Zealand kākā / Kākā | 11.5 g |
| Bird | Nestor notabilis | Kea | 14.9 g |
| Bird | Netta rufina | Red-crested pochard | 5.23 g |
| Bird | Nettapus coromandelianus | Cotton pygmy goose / Cotton teal / White-quilled pygmy goose | 2.5 g |
| Bird | Nettapus pulchellus | Green pygmy goose | 2.78 g |
| Mammal | Neurogymnurus cayluxi | – | 1.6 g |
| Mammal | Neurotrichus gibbsii | American shrew mole / Gibb’s shrew mole / Least shrew mole | 910 mg |
| Fish | Nezumia aequalis | Common Atlantic grenadier | 158 mg |
| Bird | Nicator chloris | Western nicator | 1.33 g |
| Amphibian | Nidirana adenopleura | – | 38.8 mg |
| Amphibian | Nidirana daunchina | Emei music frog | 55.2 mg |
| Amphibian | Nidirana leishanensis | – | 73.4 mg |
| Amphibian | Nidirana pleuraden | Yunnan pond frog | 51.6 mg |
| Amphibian | Nidirana yeae | – | 52.4 mg |
| Amphibian | Nimbaphrynoides occidentalis | Western Nimba toad / Mount Nimba viviparous toad | 11.2 mg |
| Mammal | Ningaui ridei | Wongai ningaui | 244 mg |
| Mammal | Ningaui yvonneae | Southern ningaui / Kitchener’s ningaui / Southern ningaui / Mallee ningaui | 265 mg |
| Bird | Ninox boobook | Australian boobook | 5.77 g |
| Bird | Ninox connivens | Barking owl / Barking boobook / Winking owl | 6.63 g |
| Bird | Ninox novaeseelandiae | Morepork / Ruru | 5.79 g |
| Bird | Ninox rufa | Rufous owl / Rufous boobook | 8.73 g |
| Bird | Ninox scutulata | Brown boobook / Brown hawk-owl | 3.1 g |
| Bird | Ninox squamipila | Seram boobook / Hantu boobook / Moluccan boobook / Moluccan hawk owl | 4.56 g |
| Bird | Ninox strenua | Powerful owl / Powerful boobook | 11.9 g |
| Bird | Nipponia nippon | Crested ibis / Japanese crested ibis / Asian crested ibis | 11.3 g |
| Bird | Nisaetus cirrhatus | Changeable hawk-eagle / Crested hawk-eagle / Marsh hawk-eagle / Indian crested hawk-eagle | 10 g |
| Mammal | Noctilio albiventris | Lesser bulldog bat | 562 mg |
| Mammal | Noctilio leporinus | Greater bulldog bat / Fisherman bat | 1.22 g |
| Insect | Nomada agrestis | – | 2.14 mg |
| Insect | Nomada cressonii | Cresson’s nomad bee | 1.76 mg |
| Insect | Nomada luteoloides | Black-and-yellow nomad bee | 1.7 mg |
| Insect | Nomada merceti | – | 0.697 mg |
| Insect | Nomada succincta | Yellow-legged nomad-bee | 1.34 mg |
| Mammal | Nomascus concolor | Black crested gibbon | 132 g |
| Mammal | Nomascus gabriellae | Yellow-cheeked gibbon / Golden-cheeked gibbon / Yellow-cheeked crested gibbon / Golden-cheeked crested gibbon | 119 g |
| Fish | Nomorhamphus megarrhamphus | – | 19 mg |
| Fish | Nomorhamphus towoetii | – | 18 mg |
| Bird | Northiella haematogaster | Eastern bluebonnet / Greater bluebonnet | 2.49 g |
| Fish | Notacanthus bonaparte | Shortfin spiny eel / Bonaparte’s spiny eel | 194 mg |
| Fish | Notacanthus chemnitzii | Snub-nosed spiny eel | 812 mg |
| Mammal | Notamacropus agilis | Agile wallaby / Sandy wallaby | 33.9 g |
| Mammal | Notamacropus dorsalis | Black-striped wallaby / Scrub wallaby / Eastern brush wallaby | 29.7 g |
| Mammal | Notamacropus eugenii | Tammar wallaby / Dama wallaby / Darma wallaby | 19.9 g |
| Mammal | Notamacropus greyi | Toolache wallaby / Grey’s wallaby | 25.5 g |
| Mammal | Notamacropus irma | Western brush wallaby / Black-gloved wallaby | 25.1 g |
| Mammal | Notamacropus parma | Parma wallaby | 18.5 g |
| Mammal | Notamacropus parryi | Whiptail wallaby / Pretty-faced wallaby | 42 g |
| Mammal | Notamacropus rufogriseus | Red-necked wallaby / Bennett’s wallaby | 36.6 g |
| Bird | Notharchus macrorhynchos | Guianan puffbird | 1.76 g |
| Bird | Nothoprocta ornata | Ornate tinamou | 2.95 g |
| Bird | Nothoprocta perdicaria | Chilean tinamou | 1.74 g |
| Bird | Nothura maculosa | Spotted nothura | 1.64 g |
| Bird | Notiomystis cincta | Stitchbird / Hihi | 1.2 g |
| Mammal | Notiosorex crawfordi | Crawford’s gray shrew / Desert shrew | 150 mg |
| Mammal | Notocitellus adocetus | Tropical ground squirrel / Cuinique | 3.01 g |
| Mammal | Notomys alexis | Spinifex hopping mouse / Tarkawara / Tarrkawarra | 970 mg |
| Amphibian | Notophthalmus viridescens | Eastern newt / Red eft | 10.2 mg |
| Mammal | Notopteris macdonaldi | Long-tailed fruit bat / Long-tailed blossom bat / Fijian blossom bat | 1.45 g |
| Mammal | Notoryctes caurinus | Northern marsupial mole / Kakarratul | 794 mg |
| Fish | Notorynchus cepedianus | Broadnose sevengill shark / Bluntnose sevengill shark / Broad-snout / Cowshark | 5.7 g |
| Reptile | Notoscincus ornatus | Ornate soil-crevice skink | 9.1 mg |
| Fish | Notoscopelus caudispinosus | Spinetail lanternfish | 75.6 mg |
| Fish | Notoscopelus elongatus | – | 155 mg |
| Fish | Notothenia rossii | Marbled rockcod | 1 g |
| Fish | Noturus flavus | Stonecat | 88 mg |
| Insect | Novomessor albisetosus | Desert harvester ant | 0.133 mg |
| Insect | Novomessor cockerelli | – | 0.171 mg |
| Bird | Nucifraga caryocatactes | Northern nutcracker / Spotted nutcracker /Eurasian nutcracker | 5.55 g |
| Bird | Nucifraga columbiana | Clark’s nutcracker / Clark’s crow | 5.3 g |
| Bird | Numenius americanus | Long-billed curlew | 3.94 g |
| Bird | Numenius arquata | Eurasian curlew / Common curlew | 4.46 g |
| Bird | Numenius madagascariensis | Far Eastern curlew | 4.87 g |
| Bird | Numenius phaeopus | Eurasian whimbrel / White-rumped whimbrel | 2.47 g |
| Bird | Numenius tahitiensis | Bristle-thighed curlew | 3.56 g |
| Bird | Numida meleagris | Helmeted guinea fowl | 4.08 g |
| Mammal | Nyctalus noctula | Common noctule | 364 mg |
| Bird | Nyctanassa violacea | Yellow-crowned night heron | 6.25 g |
| Mammal | Nyctereutes procyonoides | Common raccoon dog / Chinese raccoon dog / Asian raccoon dog | 28.5 g |
| Mammal | Nycteris arge | Bates’s slit-faced bat | 358 mg |
| Mammal | Nycteris grandis | Large slit-faced bat | 736 mg |
| Mammal | Nycteris hispida | Hairy slit-faced bat | 284 mg |
| Mammal | Nycteris javanica | Javan slit-faced bat | 475 mg |
| Mammal | Nycteris macrotis | Large-eared slit-faced bat | 389 mg |
| Mammal | Nycteris nana | Dwarf slit-faced bat | 239 mg |
| Mammal | Nycteris thebaica | Egyptian slit-faced bat | 279 mg |
| Mammal | Nycteris tragata | Malayan slit-faced bat | 476 mg |
| Bird | Nyctibius griseus | Common potoo / Kakuy / Urutau | 2.05 g |
| Mammal | Nycticebus bengalensis | Bengal slow loris / Northern slow loris | 13.5 g |
| Mammal | Nycticebus coucang | Sunda slow loris / Greater slow loris | 11.8 g |
| Mammal | Nycticeinops crassulus | Broad-headed serotine / Broad-headed pipistrelle | 132 mg |
| Bird | Nycticorax caledonicus | Nankeen night heron / Rufous night heron | 5.93 g |
| Bird | Nycticorax nycticorax | Black-crowned night heron / Black-capped night heron / Night heron | 6.4 g |
| Bird | Nyctidromus albicollis | Common pauraque | 943 mg |
| Mammal | Nyctimene albiventer | Common tube-nosed fruit bat | 825 mg |
| Mammal | Nyctimene robinsoni | Eastern tube-nosed bat / Queensland tube-nosed bat | 1.23 g |
| Mammal | Nyctimene vizcaccia | Umboi tube-nosed fruit bat | 988 mg |
| Bird | Nyctiphrynus ocellatus | Ocellated poorwill | 767 mg |
| Bird | Nyctiprogne leucopyga | Band-tailed nighthawk | 528 mg |
| Mammal | Nyctomys sumichrasti | Sumichrast’s vesper rat | 1.08 g |
| Mammal | Nyctophilus corbeni | South-eastern long-eared bat / Corben’s long-eared bat | 254 mg |
| Mammal | Nyctophilus geoffroyi | Lesser long-eared bat | 167 mg |
| Bird | Nymphicus hollandicus | Cockatiel / Weero / Weiro / Quarrion | 2.46 g |
| Fish | Oblada melanura | Saddled seabream / Saddle bream / Oblade | 633 mg |
| Amphibian | Occidozyga lima | Green puddle frog / Rough-skinned floating frog / Pearly skin puddle frog / Pointed-tongued floating frog | 15.8 mg |
| Amphibian | Occidozyga martensii | Round-tongued floating frog | 13.8 mg |
| Bird | Oceanites oceanicus | Wilson’s storm petrel / Wilson’s petrel | 768 mg |
| Mammal | Ochotona hyperborea | Northern pika | 2.22 g |
| Mammal | Ochotona princeps | American pika | 2.1 g |
| Mammal | Ochotona rufescens | Afghan pika | 2.75 g |
| Mammal | Ochrotomys nuttalli | Golden mouse | 700 mg |
| Bird | Ocreatus peruanus | Peruvian racket-tail | 177 mg |
| Bird | Ocreatus underwoodii | White-booted racket-tail | 171 mg |
| Mammal | Octodon degus | Common degu | 2.09 g |
| Bird | Ocyceros birostris | Indian gray hornbill | 4.71 g |
| Bird | Ocyphaps lophotes | Crested pigeon / Topknot pigeon | 1.73 g |
| Fish | Ocyurus chrysurus | Yellowtail snapper | 940 mg |
| Mammal | Odobenus rosmarus | Walrus | 1.33 kg |
| Mammal | Odocoileus hemionus | Mule deer | 202 g |
| Mammal | Odocoileus virginianus | White-tailed deer / Whitetail / Virginia deer | 182 g |
| Fish | Odontamblyopus lacepedii | Daegaengi / Warasubo | 35.7 mg |
| Fish | Odontamblyopus rubicundus | – | 16.8 mg |
| Fish | Odontobutis obscura | Dark sleeper / Toadfish | 65.4 mg |
| Insect | Odontomachus bauri | – | 0.212 mg |
| Insect | Odontomachus brunneus | – | 0.192 mg |
| Insect | Odontomachus clarus | – | 0.276 mg |
| Insect | Odontomachus hastatus | – | 0.43 mg |
| Fish | Odonus niger | Redtoothed triggerfish / Niger triggerfish | 897 mg |
| Amphibian | Odorrana grahami | Graham’s frog / Diskless-fingered odorous frog | 102 mg |
| Amphibian | Odorrana graminea | Large odorous frog | 56.7 mg |
| Amphibian | Odorrana hainanensis | – | 62.6 mg |
| Amphibian | Odorrana hejiangensis | Hejiang frog / Hejiang odorous frog | 40.4 mg |
| Amphibian | Odorrana huanggangensis | – | 52.9 mg |
| Amphibian | Odorrana kuangwuensis | Kuang-wu Shan frog / Kuangwu odorous frog | 37.5 mg |
| Amphibian | Odorrana kweichowensis | – | 62.3 mg |
| Amphibian | Odorrana lungshengensis | Lung-shen-hsien frog / Lungshen odorous frog | 88.3 mg |
| Amphibian | Odorrana margaretae | Margareta’s frog / Margaret frog / Green odorous frog | 90.7 mg |
| Amphibian | Odorrana nanjiangensis | – | 74.8 mg |
| Amphibian | Odorrana nasuta | Hainan bamboo-leaf frog | 82.4 mg |
| Amphibian | Odorrana schmackeri | Schmacker’s frog / Piebald odorous frog / Kaochahien frog | 44.7 mg |
| Amphibian | Odorrana tiannanensis | Dawei frog | 132 mg |
| Insect | Oecophylla smaragdina | Asian weaver ant / Weaver ant / Green tree ant / Orange gaster | 0.062 mg |
| Bird | Oedistoma iliolophus | Spectacled longbill / Dwarf longbill / Plumed longbill / Dwarf honeyeater | 499 mg |
| Reptile | Oedura marmorata | Marbled velvet gecko | 77.4 mg |
| Reptile | Oedura monilis | Ocellated velvet gecko / Ocellated gecko / Blotched gecko | 65.2 mg |
| Bird | Oena capensis | Namaqua dove | 666 mg |
| Bird | Oenanthe oenanthe | Northern wheatear / Wheatear | 732 mg |
| Bird | Ognorhynchus icterotis | Yellow-eared parrot | 9.17 g |
| Mammal | Okapia johnstoni | Okapi / Forest giraffe / Zebra giraffe / Congolese giraffe | 493 g |
| Mammal | Oligoryzomys longicaudatus | Long-tailed colilargo / Long-tailed pygmy rice rat | 670 mg |
| Mammal | Ommatophoca rossii | Ross seal | 495 g |
| Fish | Omosudis lowii | Hammerjaw | 58.3 mg |
| Fish | Omox biporos | Omox blenny | 4.2 mg |
| Fish | Oncorhynchus mykiss | Rainbow trout | 822 mg |
| Mammal | Ondatra zibethicus | Common muskrat | 5.25 g |
| Amphibian | Onychodactylus japonicus | Japanese clawed salamander | 21.5 mg |
| Mammal | Onychogalea fraenata | Bridled nail-tail wallaby / Bridled nail-tailed wallaby / Bridled nailtail wallaby / Bridled wallaby | 14.5 g |
| Mammal | Onychogalea lunata | Crescent nail-tail wallaby / Worong | 10.4 g |
| Mammal | Onychogalea unguifera | Northern nail-tail wallaby / Sandy nail-tail wallaby | 17 g |
| Bird | Onychognathus salvadorii | Bristle-crowned starling | 2.53 g |
| Mammal | Onychomys leucogaster | Northern grasshopper mouse | 798 mg |
| Mammal | Onychomys torridus | Southern grasshopper mouse / Scorpion mouse | 594 mg |
| Bird | Onychoprion aleuticus | Aleutian tern | 1.78 g |
| Bird | Onychoprion anaethetus | Bridled tern | 2.03 g |
| Bird | Onychoprion fuscatus | Sooty tern | 2.4 g |
| Bird | Onychoprion lunatus | Spectacled tern / Grey-backed tern | 2.11 g |
| Bird | Onychorhynchus coronatus | Tropical royal flycatcher | 488 mg |
| Amphibian | Oophaga histrionica | Harlequin poison frog / Harlequin poison-dart frog | 27.7 mg |
| Amphibian | Oophaga pumilio | Strawberry poison frog / Strawberry poison dart frog / Blue jeans poison frog | 11.5 mg |
| Amphibian | Oophaga speciosa | Splendid poison frog | 15.2 mg |
| Fish | Ophiocara porocephala | Northern mud gudgeon | 235 mg |
| Amphibian | Ophryophryne microstoma | – | 19.6 mg |
| Fish | Ophthalmotilapia boops | – | 98 mg |
| Fish | Ophthalmotilapia nasuta | – | 135 mg |
| Fish | Ophthalmotilapia ventralis | – | 136 mg |
| Bird | Opisthocomus hoazin | Hoatzin / Hoactzin / Canje pheasant | 4.03 g |
| Fish | Opisthoproctus soleatus | Barrel-eye | 26 mg |
| Fish | Opistognathus macrognathus | Banded jawfish | 72 mg |
| Fish | Opistognathus maxillosus | Mottled jawfish | 71.7 mg |
| Fish | Oplopomus oplopomus | Spinecheek goby | 33.5 mg |
| Reptile | Oplurus cuvieri | Collared iguana / Collared iguanid lizard / Cuvier’s Madagascar skink / Cuvier’s Madagascar swift | 266 mg |
| Reptile | Oplurus quadrimaculatus | Duméril’s Madagascar Swift / Madagascar spotted spiny-tailed iguana | 211 mg |
| Mammal | Orcinus orca | Orca / Killer whale | 6.33 kg |
| Fish | Orectolobus maculatus | Spotted wobbegong / Common carpet shark / Common catshark / Tassel shark | 3.23 g |
| Fish | Orectolobus ornatus | Ornate wobbegong / Banded wobbegong | 2.15 g |
| Bird | Oreocharis arfaki | Tit berrypecker | 704 mg |
| Fish | Oreochromis macrochir | Longfin tilapia / Greenhead tilapia / Greenhead bream | 257 mg |
| Fish | Oreochromis mossambicus | Mozambique tilapia / Blue kurper / Mujair | 110 mg |
| Fish | Oreochromis niloticus | Nile tilapia / Nilotica / Boulti | 283 mg |
| Fish | Oreochromis tanganicae | Tanganyika tilapia | 452 mg |
| Bird | Oreoica gutturalis | Crested bellbird | 1.73 g |
| Amphibian | Oreolalax rugosus | Chaochiao lazy toad / Warty toothed toad | 44.3 mg |
| Bird | Oreopsittacus arfaki | Plum-faced lorikeet / Whiskered lorikeet | 1.19 g |
| Bird | Oreortyx pictus | Mountain quail | 1.74 g |
| Mammal | Oreotragus oreotragus | Klipspringer | 59.4 g |
| Bird | Origma robusta | Mountain mouse-warbler | 974 mg |
| Bird | Origma solitaria | Rockwarbler | 881 mg |
| Bird | Oriolus flavocinctus | Green oriole / Australasian yellow oriole / Australian yellow oriole / Yellow oriole | 2.18 g |
| Bird | Oriolus oriolus | Eurasian golden oriole / Common golden oriole / European golden oriole / Western Eurasian golden oriole | 1.4 g |
| Bird | Oriolus sagittatus | Olive-backed oriole / White-bellied oriole | 2.03 g |
| Mammal | Ornithorhynchus anatinus | Platypus / Duck-billed platypus | 10.1 g |
| Bird | Ortalis canicollis | Chaco chachalaca | 3.5 g |
| Bird | Ortalis vetula | Plain chachalaca | 3.35 g |
| Bird | Orthonyx spaldingii | Chowchilla | 3 g |
| Bird | Orthonyx temminckii | Australian logrunner | 1.82 g |
| Bird | Orthopsittaca manilatus | Red-bellied macaw | 8.24 g |
| Bird | Orthorhyncus cristatus | Antillean crested hummingbird | 145 mg |
| Fish | Orthosternarchus tamandua | Tamandua knifefish | 219 mg |
| Bird | Ortygornis pondicerianus | Grey francolin / Grey partridge | 1.7 g |
| Bird | Ortygornis sephaena | Crested francolin | 1.91 g |
| Mammal | Orycteropus afer | Aardvark / African ant bear / Cape anteater | 93.9 g |
| Mammal | Oryctolagus cuniculus | European rabbit | 10.6 g |
| Mammal | Oryx beisa | East African oryx / Beisa | 282 g |
| Mammal | Oryx gazella | Gemsbok / South African oryx | 286 g |
| Fish | Oryzias celebensis | Celebes medaka | 15 mg |
| Fish | Oryzias dancena | Indian ricefish | 14 mg |
| Fish | Oryzias latipes | Japanese rice fish / Medaka | 12.1 mg |
| Fish | Oryzias marmoratus | Marmorated ricefish / Marmorated medaka | 17 mg |
| Fish | Oryzias matanensis | Matano ricefish | 16 mg |
| Fish | Oryzias profundicola | Yellow-finned ricefish | 16 mg |
| Mammal | Oryzomys palustris | Marsh rice rat | 880 mg |
| Mammal | Oryzorictes hova | Mole-like rice tenrec / Fossorial tenrec / Hova rice tenrec | 546 mg |
| Mammal | Osgoodomys banderanus | Michoacan deer mouse | 940 mg |
| Fish | Osmerus mordax | Rainbow smelt | 122 mg |
| Insect | Osmia albolateralis | White-sided mason bee | 1.73 mg |
| Insect | Osmia atriventris | Maine blueberry bee | 0.447 mg |
| Insect | Osmia bicornis | Red mason bee | 1.24 mg |
| Insect | Osmia caerulescens | Blue mason bee | 1.01 mg |
| Insect | Osmia cornifrons | Horned-face bee | 0.676 mg |
| Insect | Osmia cornuta | European orchard bee | 1.94 mg |
| Insect | Osmia latreillei | – | 1.37 mg |
| Insect | Osmia leaiana | Orange-vented mason bee | 1.1 mg |
| Insect | Osmia lignaria | Orchard mason bee / Blue orchard bee | 1.17 mg |
| Insect | Osmia pumila | Dwarf mason bee | 0.604 mg |
| Insect | Osmia submicans | – | 0.584 mg |
| Mammal | Osphranter antilopinus | Antilopine kangaroo / Antilopine wallaroo / Antilopine wallaby | 57.8 g |
| Mammal | Osphranter robustus | Common wallaroo / Euro / Hill wallaroo | 52 g |
| Mammal | Osphranter rufus | Red kangaroo | 63.5 g |
| Fish | Osteoglossum bicirrhosum | Silver arowana | 1.7 g |
| Fish | Osteomugil cunnesius | Longarm mullet | 136 mg |
| Amphibian | Osteopilus septentrionalis | Cuban tree frog | 20.9 mg |
| Fish | Ostorhinchus angustatus | Broad-striped cardinalfish | 65 mg |
| Fish | Ostorhinchus compressus | Ochre-striped cardinalfish / Blue-eyed cardinalfish / Split banded cardinalfish | 39 mg |
| Fish | Ostorhinchus cookii | Cook’s cardinalfish / Cook’s soldierfish / Blackbanded cardinal / Blackbanded cardinalfish | 26.9 mg |
| Fish | Ostorhinchus cyanosoma | Yellow-striped cardinalfish / Goldenstriped cardinalfish / Orange-lined cardinalfish | 37 mg |
| Fish | Ostorhinchus endekataenia | Candy-stripe cardinalfish | 92 mg |
| Fish | Ostorhinchus fasciatus | Broad-banded cardinalfish / Barred striped cardinalfish / Four-banded soldier-fish / Striped cardinalfish | 49 mg |
| Fish | Ostorhinchus nigrofasciatus | Black-stripe cardinalfish | 66 mg |
| Fish | Ostorhinchus norfolcensis | Norfolk cardinalfish | 88 mg |
| Fish | Ostracion cubicum | Yellow boxfish | 406 mg |
| Fish | Ostracion cyanurus | Bluetail trunkfish / Arabian trunkfish / Red Sea boxfish | 209 mg |
| Mammal | Otaria flavescens | South American sea lion / Southern sea lion / Patagonian sea lion / Lobo marino | 516 g |
| Bird | Otidiphaps nobilis | Pheasant pigeon | 2.69 g |
| Bird | Otis tarda | Great bustard | 9.78 g |
| Mammal | Otocolobus manul | Pallas’s cat / Manul | 34.5 g |
| Mammal | Otocyon megalotis | Bat-eared fox | 26.6 g |
| Mammal | Otolemur crassicaudatus | Brown greater galago / Large-eared greater galago / Thick-tailed galago | 11 g |
| Mammal | Otolemur garnettii | Northern greater galago / Garnett’s greater galago / Garnett’s galago / Small-eared greater galago | 10.8 g |
| Mammal | Otolemur monteiri | Silvery greater galago | 11.4 g |
| Mammal | Otomops martiensseni | Large-eared free-tailed bat | 756 mg |
| Mammal | Otomys angoniensis | Angoni vlei rat | 420 mg |
| Mammal | Otomys irroratus | Southern African vlei rat | 1.38 g |
| Mammal | Otospermophilus atricapillus | Baja California rock squirrel | 5.24 g |
| Mammal | Otospermophilus beecheyi | California ground squirrel / Beechey ground squirrel | 5.22 g |
| Mammal | Otospermophilus variegatus | Rock squirrel | 7.01 g |
| Mammal | Ototylomys phyllotis | Big-eared climbing rat | 1.33 g |
| Bird | Otus bakkamoena | Indian scops owl | 4.19 g |
| Bird | Otus magicus | Moluccan scops owl | 3.9 g |
| Bird | Otus scops | Eurasian scops owl / Common scops owl / European scops owl | 2.44 g |
| Mammal | Ourebia ourebi | Oribi | 58 g |
| Mammal | Ovis ammon | Argali / Mountain sheep | 142 g |
| Mammal | Ovis aries | Sheep / Domestic sheep | 125 g |
| Fish | Oxuderces dentatus | – | 21.1 mg |
| Fish | Oxycheilinus arenatus | Speckled maori wrasse | 327 mg |
| Fish | Oxycheilinus celebicus | Celebes maori wrasse | 163 mg |
| Fish | Oxycheilinus digramma | Cheek-lined maori wrasse | 240 mg |
| Fish | Oxycheilinus unifasciatus | Ringtail maori wrasse | 246 mg |
| Fish | Oxymonacanthus longirostris | Orange spotted filefish | 76 mg |
| Fish | Oxynotus bruniensis | Prickly dogfish | 2.25 g |
| Fish | Oxynotus paradoxus | Sailfin roughshark | 3.43 g |
| Bird | Oxyura australis | Blue-billed duck | 4.16 g |
| Bird | Oxyura jamaicensis | Ruddy duck | 3.65 g |
| Bird | Oxyura maccoa | Maccoa duck | 4.85 g |
| Fish | Oxyurichthys tentacularis | – | 36 mg |
| Mammal | Ozimops beccarii | Beccari’s free-tailed bat | 233 mg |
| Bird | Pachycephala olivacea | Olive whistler / Olivaceous whistler | 1.53 g |
| Bird | Pachycephala pectoralis | Australian golden whistler | 1.16 g |
| Bird | Pachycephala rufiventris | Rufous whistler / Rufous-bellied whistler / White-bellied whistler | 1.07 g |
| Bird | Pachycephala rufogularis | Red-lored whistler / Buff- breasted / Red-throated / Rufous-throated whistler | 1.13 g |
| Bird | Pachycephala simplex | Grey whistler | 860 mg |
| Bird | Pachycephalopsis poliosoma | White-eyed robin | 1.1 g |
| Insect | Pachycondyla apicalis | – | 0.659 mg |
| Insect | Pachycondyla obscuricornis | – | 0.397 mg |
| Bird | Pachyglossa agilis | Thick-billed flowerpecker | 519 mg |
| Bird | Pachyptila belcheri | Slender-billed prion / Thin-billed prion | 2.07 g |
| Bird | Pachyptila desolata | Antarctic prion / Dove prion / Totorore | 2.18 g |
| Bird | Pachyptila salvini | Salvin’s prion / Medium-billed prion | 2.13 g |
| Bird | Pachyptila turtur | Fairy prion | 2.07 g |
| Bird | Pachyramphus cinnamomeus | Cinnamon becard | 911 mg |
| Bird | Pachyramphus niger | Jamaican becard | 1.35 g |
| Bird | Pachyramphus polychopterus | White-winged becard | 768 mg |
| Bird | Padda oryzivora | Java sparrow | 864 mg |
| Fish | Pagellus bogaraveo | Java finch / Java rice sparrow / Java rice bird | 1.6 g |
| Fish | Pagellus erythrinus | Common pandora / King of the breams / Red pandora / Spanish seabream | 664 mg |
| Bird | Pagodroma nivea | Snow petrel | 4.55 g |
| Bird | Pagophila eburnea | Ivory gull / Ivory seagull | 5 g |
| Mammal | Pagophilus groenlandicus | Harp seal / Saddleback seal / Greenland seal | 280 g |
| Mammal | Paguma larvata | Masked palm civet / Gem-faced civet / Himalayan palm civet | 29.4 g |
| Bird | Pampusana beccarii | Bronze ground dove | 1.09 g |
| Bird | Pampusana jobiensis | White-breasted ground dove / White-bibbed ground dove / Purple ground dove | 1.07 g |
| Bird | Pampusana rubescens | Marquesan ground dove / Marquesas ground dove | 1.07 g |
| Mammal | Pan paniscus | Bonobo / Pygmy chimpanzee / Dwarf chimpanzee / Gracile chimpanzee | 334 g |
| Mammal | Pan troglodytes | Chimp / Common chimpanzee / Robust chimpanzee | 364 g |
| Fish | Pandaka lidwilli | Lidwill’s dwarf goby | 1.4 mg |
| Bird | Pandion cristatus | Eastern osprey | 9.72 g |
| Bird | Pandion haliaetus | Osprey / Sea hawk / River hawk / Fish hawk | 9.66 g |
| Mammal | Panthera leo | Lion | 247 g |
| Mammal | Panthera onca | Jaguar | 150 g |
| Mammal | Panthera pardus | Leopard | 133 g |
| Mammal | Panthera tigris | Tiger | 273 g |
| Mammal | Panthera uncia | Snow leopard | 101 g |
| Reptile | Pantherophis guttatus | Corn snake / Red rat snake | 255 mg |
| Fish | Pantodon buchholzi | Freshwater butterflyfish / African butterflyfish | 37.1 mg |
| Mammal | Pantolambda bathmodon | – | 19 g |
| Insect | Panurgus banksianus | Large shaggy bee | 1.63 mg |
| Insect | Panurgus calcaratus | Small shaggy bee | 0.487 mg |
| Insect | Panurgus dargius | – | 0.494 mg |
| Insect | Panurgus venustus | – | 0.62 mg |
| Bird | Panurus biarmicus | Bearded reedling / Bearded tit / Bearded parrotbill | 548 mg |
| Mammal | Papio anubis | Olive baboon / Anubis baboon | 176 g |
| Mammal | Papio cynocephalus | Yellow baboon | 174 g |
| Mammal | Papio hamadryas | Hamadryas baboon | 157 g |
| Mammal | Papio papio | Guinea baboon | 170 g |
| Mammal | Papio ursinus | Chacma baboon / Cape baboon | 180 g |
| Mammal | Pappogeomys bulleri | Buller’s pocket gopher | 4.19 g |
| Reptile | Papuascincus buergersi | – | 31 mg |
| Reptile | Papuascincus flavipes | Common green tree skink | 56 mg |
| Reptile | Papuascincus stanleyanus | – | 35.4 mg |
| Fish | Parablennius gattorugine | Tompot blenny | 132 mg |
| Fish | Parablennius sanguinolentus | Rusty blenny / Black Sea blenny | 125 mg |
| Bird | Parabuteo unicinctus | Harris’s hawk / Bay-winged hawk / Dusky hawk / Peuco | 8.27 g |
| Insect | Parachartergus smithii | – | 0.191 mg |
| Fish | Paracheilinus octotaenia | Red Sea eightline flasher | 64.5 mg |
| Fish | Paracirrhites arcatus | Arc-eye hawkfish / Ringeye hawkfish / Horseshoe hawkfish / Whiteline hawkfish | 94 mg |
| Mammal | Paracynictis selousi | Selous’s mongoose | 16.3 g |
| Fish | Paracyprichromis brieni | – | 52.7 mg |
| Mammal | Paradoxurus hermaphroditus | Asian palm civet / Common palm civet / Toddy cat / Musang | 25 g |
| Mammal | Paradoxurus zeylonensis | Golden palm civet | 17.8 g |
| Mammal | Paraechinus aethiopicus | Desert hedgehog | 2.4 g |
| Mammal | Paraechinus hypomelas | Brandt’s hedgehog | 2.4 g |
| Mammal | Paragalago granti | Grant’s bushbaby / Grant’s lesser bushbaby / Mozambique lesser bushbaby | 4.07 g |
| Mammal | Paragalago zanzibaricus | Zanzibar bushbaby / Matundu dwarf galago / Udzungwa bushbaby / Zanzibar galago | 3.51 g |
| Fish | Paragobiodon echinocephalus | Redhead goby | 9.91 mg |
| Mammal | Parahyaena brunnea | Brown hyena / Strandwolf | 107 g |
| Mammal | Paramelomys levipes | Long-nosed mosaic-tailed rat / Papuan lowland paramelomys | 1.86 g |
| Mammal | Paramelomys rubex | Mountain mosaic-tailed rat | 1.27 g |
| Fish | Paramormyrops gabonensis | Makokou mormyrid | 186 mg |
| Fish | Paramormyrops kingsleyae | Old Calabar mormyrid | 171 mg |
| Mammal | Parantechinus apicalis | Dibbler / Southern dibbler | 1.22 g |
| Mammal | Paranyctimene raptor | Lesser tube-nosed fruit bat / Unstriped tube-nosed bat | 731 mg |
| Fish | Parapercis clathrata | Latticed sandperch | 85 mg |
| Fish | Parapercis cylindrica | Cylindrical sandperch | 89 mg |
| Fish | Parapercis hexophtalma | Speckled sandperch | 236 mg |
| Fish | Parapercis millepunctata | Black dotted sand perch | 183 mg |
| Fish | Parapercis nebulosa | Barred sandperch | 202 mg |
| Fish | Parapercis roseoviridis | – | 184 mg |
| Fish | Parapercis schauinslandii | Redspotted sandperch / Lyretail grubfish / Flagfin weever | 31.6 mg |
| Insect | Paraponera clavata | Bullet ant | 1.73 mg |
| Fish | Parascorpaena picta | Northern scorpionfish / Painted scorpionfish / Marbled rock cod | 15 mg |
| Fish | Parastromateus niger | Black pomfret | 666 mg |
| Insect | Paratrechina longicornis | Longhorn crazy ant / Black crazy ant | 0.028 mg |
| Fish | Paratrypauchen microcephalus | Comb goby | 18.1 mg |
| Mammal | Paraxerus cepapi | Smith’s bush squirrel / Yellow-footed squirrel / Tree squirrel | 2.84 g |
| Bird | Parayuhina diademata | White-collared yuhina | 799 mg |
| Bird | Pardalotus punctatus | Spotted pardalote | 412 mg |
| Bird | Pardalotus striatus | Striated pardalote / Pickwick / Wittachew / Chip-chip | 539 mg |
| Bird | Pardipicus nivosus | Buff-spotted woodpecker | 1.64 g |
| Bird | Pardirallus maculatus | Spotted rail | 1.96 g |
| Fish | Parioglossus raoi | Rao’s hover goby | 2.28 mg |
| Bird | Paroaria coronata | Red-crested cardinal / Brazilian cardinal | 1.25 g |
| Bird | Paroaria dominicana | Red-cowled cardinal | 1.16 g |
| Fish | Parodon nasus | – | 43 mg |
| Reptile | Paroedura picta | Ocelot gecko / Madagascar ground gecko / Malagasy fat-tailed gecko / Fat-headed gecko | 88.3 mg |
| Bird | Parotia lawesii | Lawes’s parotia | 4.15 g |
| Fish | Parupeneus barberinus | Dash-and-dot goatfish | 880 mg |
| Fish | Parupeneus cyclostomus | Yellow-saddle goatfish / Blue goatfish / Bright goatfish | 529 mg |
| Fish | Parupeneus forsskali | Red Sea goatfish | 435 mg |
| Fish | Parupeneus heptacanthus | Cinnabar goatfish | 448 mg |
| Fish | Parupeneus indicus | Indian goatfish | 397 mg |
| Fish | Parupeneus macronemus | Long-barbel goatfish | 465 mg |
| Fish | Parupeneus multifasciatus | Manybar goatfish | 328 mg |
| Fish | Parupeneus pleurostigma | Sidespot goatfish / Round-spot goatfish | 583 mg |
| Fish | Parupeneus porphyreus | Whitesaddle goatfish / Kūmū | 573 mg |
| Fish | Parupeneus rubescens | Rosy goatfish | 129 mg |
| Fish | Parupeneus trifasciatus | Doublebar goatfish | 658 mg |
| Bird | Parus major | Great tit | 854 mg |
| Bird | Passer cinnamomeus | Russet sparrow / Cinnamon sparrow / Cinnamon tree sparrow | 680 mg |
| Bird | Passer domesticus | House sparrow | 978 mg |
| Bird | Passer griseus | Northern grey-headed sparrow / Grey-headed sparrow | 970 mg |
| Bird | Passer hispaniolensis | Spanish sparrow / Willow sparrow | 967 mg |
| Bird | Passer montanus | Tree sparrow / Eurasian tree sparrow / German sparrow | 806 mg |
| Bird | Passerculus sandwichensis | Savannah sparrow | 702 mg |
| Bird | Passerina cyanea | Indigo bunting | 672 mg |
| Fish | Pastinachus atrus | Broad cowtail ray | 23.3 g |
| Fish | Pastinachus sephen | Cowtail stingray | 23.3 g |
| Bird | Pastor roseus | Rosy starling / Rose-coloured starling / Rose-coloured pastor | 1.48 g |
| Bird | Patagioenas cayennensis | Pale-vented pigeon | 1.82 g |
| Bird | Patagioenas fasciata | Band-tailed pigeon | 2.2 g |
| Bird | Patagioenas flavirostris | Red-billed pigeon | 2.04 g |
| Bird | Patagioenas inornata | Plain pigeon | 2 g |
| Bird | Patagioenas maculosa | Spot-winged pigeon | 2.1 g |
| Bird | Patagioenas picazuro | Picazuro pigeon | 2.4 g |
| Bird | Patagioenas plumbea | Plumbeous pigeon | 1.4 g |
| Bird | Patagioenas speciosa | Scaled pigeon | 2.05 g |
| Bird | Patagioenas squamosa | Scaly-naped pigeon / Red-necked pigeon | 1.96 g |
| Bird | Patagioenas subvinacea | Ruddy pigeon | 1.47 g |
| Fish | Pateobatis fai | Pink whipray | 40.6 g |
| Bird | Pavo cristatus | Indian peafowl / Common peafowl / Blue peafowl / Indian peacock | 25.4 g |
| Bird | Pavo muticus | Green peafowl / Green peacock | 6.5 g |
| Mammal | Pectinator spekei | Speke’s pectinator / Speke’s gundi | 1.93 g |
| Mammal | Pedetes capensis | South African springhare | 11.1 g |
| Bird | Pedionomus torquatus | Plains-wanderer | 798 mg |
| Fish | Pegasus volitans | Longtail seamoth | 8.6 mg |
| Mammal | Pekania pennanti | Fisher / Fisher cat | 30.4 g |
| Bird | Pelagodroma marina | White-faced storm petrel / White-faced petrel | 1 g |
| Bird | Pelargopsis capensis | Stork-billed kingfisher | 2.92 g |
| Mammal | Pelea capreolus | Grey rhebok | 121 g |
| Bird | Pelecanoides georgicus | South Georgia diving petrel / Georgian diving-petrel | 1.52 g |
| Bird | Pelecanoides urinatrix | Common diving petrel | 1.73 g |
| Bird | Pelecanus conspicillatus | Australian pelican | 24.5 g |
| Bird | Pelecanus erythrorhynchos | American white pelican | 25.1 g |
| Bird | Pelecanus occidentalis | Brown pelican | 20.2 g |
| Bird | Pelecanus onocrotalus | Great white pelican / Eastern white pelican / Rosy pelican / White pelican | 31.6 g |
| Bird | Pelecanus philippensis | Spot-billed pelican / Gray pelican | 21.5 g |
| Bird | Pelecanus rufescens | Pink-backed pelican | 19.5 g |
| Amphibian | Pelobates cultripes | Western spadefoot / Iberian spadefoot toad / Spanish spadefoot toad / Wagler’s spadefoot toad | 80.9 mg |
| Amphibian | Pelobates syriacus | Eastern spadefoot / Syrian spadefoot | 103 mg |
| Reptile | Pelodiscus sinensis | Chinese softshell turtle | 622 mg |
| Amphibian | Pelodryas caerulea | Australian green tree frog / Green tree frog / White’s tree frog / Dumpy tree frog | 154 mg |
| Amphibian | Pelodytes punctatus | Common parsley frog | 45 mg |
| Amphibian | Pelophylax esculentus | Edible frog / Common water frog / Green frog / European dark-spotted frog | 157 mg |
| Amphibian | Pelophylax fukienensis | Fukien gold-striped pond frog | 69.2 mg |
| Amphibian | Pelophylax hubeiensis | – | 47.2 mg |
| Amphibian | Pelophylax lessonae | Pool frog | 207 mg |
| Amphibian | Pelophylax nigromaculatus | Dark-spotted frog / Black-spotted pond frog / Black-spotted frog | 75.6 mg |
| Amphibian | Pelophylax plancyi | Eastern golden frog | 53.9 mg |
| Amphibian | Pelophylax ridibundus | Marsh frog | 114 mg |
| Bird | Peltohyas australis | Inland dotterel / Inland plover | 1.19 g |
| Reptile | Pelusios subniger | East African black mud turtle / Pan terrapin | 297 mg |
| Fish | Pempheris oualensis | Blackspot sweeper / Silver sweeper | 313 mg |
| Bird | Penelope purpurascens | Crested guan | 6.48 g |
| Bird | Penelope superciliaris | Rusty-margined guan | 4.6 g |
| Bird | Penelopides panini | Visayan hornbill | 7.13 g |
| Amphibian | Pengilleyia peronii | Peron’s tree frog / Emerald-spotted tree frog / Emerald-speckled tree frog / Laughing tree frog | 72.7 mg |
| Fish | Pentapodus caninus | Small-toothed whiptail | 497 mg |
| Mammal | Penthetor lucasi | Dusky fruit bat | 948 mg |
| Mammal | Peponocephala electra | Melon-headed whale / Electra dolphin / Little killer whale / Many-toothed blackfish | 1.39 kg |
| Insect | Pepsis thisbe | Thisbe’s tarantula-hawk wasp | 7.47 mg |
| Mammal | Perameles bougainville | Western barred bandicoot / Shark Bay bandicoot / Marl | 3.27 g |
| Mammal | Perameles gunnii | Eastern barred bandicoot | 4.58 g |
| Mammal | Perameles nasuta | Long-nosed bandicoot | 5.03 g |
| Fish | Perca flavescens | Yellow perch / Striped perch / American perch / Preacher | 337 mg |
| Fish | Perca fluviatilis | European perch / Common perch / Redfin perch / Big-scaled redfin | 162 mg |
| Bird | Perdix perdix | Grey partridge | 1.67 g |
| Bird | Pericrocotus ethologus | Long-tailed minivet | 911 mg |
| Mammal | Perimyotis subflavus | Tricolored bat / American perimyotis / Eastern pipistrelle | 125 mg |
| Fish | Periophthalmodon freycineti | Pug-headed mudskipper | 167 mg |
| Fish | Periophthalmus argentilineatus | Barred mudskipper / Silverlined mudskipper | 79.2 mg |
| Fish | Periophthalmus barbarus | Atlantic mudskipper | 115 mg |
| Fish | Periophthalmus kalolo | Common mudskipper | 43.8 mg |
| Fish | Periophthalmus modestus | Shuttles hoppfish / Shuttles mudskipper | 75 mg |
| Fish | Periophthalmus novaeguineaensis | New Guinea mudskipper | 81.3 mg |
| Bird | Periparus ater | Coal tit | 555 mg |
| Bird | Periparus venustulus | Yellow-bellied tit | 530 mg |
| Insect | Periplaneta americana | American cockroach / Ship cockroach / Kakerlac / Bombay canary | 0.195 mg |
| Bird | Perisoreus canadensis | Canada jay / Grey jay / Gray jay / Camp robber | 2.55 g |
| Bird | Perisoreus infaustus | Siberian jay | 2.7 g |
| Bird | Perissocephalus tricolor | Capuchinbird / Calfbird | 4.87 g |
| Fish | Perissodus eccentricus | – | 79.3 mg |
| Fish | Perissodus microlepis | – | 95.1 mg |
| Fish | Perissodus paradoxus | – | 108 mg |
| Fish | Perissodus straeleni | – | 100 mg |
| Bird | Pernis apivorus | European honey buzzard / Common pern | 7.42 g |
| Mammal | Perodicticus potto | West African potto / Bosman’s potto | 12.3 g |
| Mammal | Perognathus flavus | Silky pocket mouse | 305 mg |
| Mammal | Perognathus longimembris | Little pocket mouse | 325 mg |
| Mammal | Perognathus parvus | Great Basin pocket mouse | 478 mg |
| Mammal | Peromyscus aztecus | Aztec mouse | 920 mg |
| Mammal | Peromyscus boylii | Brush mouse | 710 mg |
| Mammal | Peromyscus californicus | California deermouse / California mouse | 908 mg |
| Mammal | Peromyscus crinitus | Canyon mouse | 530 mg |
| Mammal | Peromyscus difficilis | Zacatecan deer mouse / Zacatecan deermouse / Southern rock mouse | 900 mg |
| Mammal | Peromyscus eremicus | Cactus mouse / Cactus deermouse | 540 mg |
| Mammal | Peromyscus furvus | Blackish deer mouse / Blackish deermouse | 1.06 g |
| Mammal | Peromyscus gossypinus | Cotton mouse | 680 mg |
| Mammal | Peromyscus grandis | Big deer mouse / Big deermouse / Giant deermouse | 1.53 g |
| Mammal | Peromyscus guatemalensis | Guatemalan deer mouse / Guatemalen deermouse | 1.16 g |
| Mammal | Peromyscus keeni | Northwestern deer mouse / Northwestern deermouse / Keen’s mouse | 770 mg |
| Mammal | Peromyscus leucopus | White-footed mouse | 615 mg |
| Mammal | Peromyscus maniculatus | Eastern deer mouse / North American deermouse | 578 mg |
| Mammal | Peromyscus megalops | Brown deer mouse / Brown deermouse | 1.12 g |
| Mammal | Peromyscus melanocarpus | Black-wristed deer mouse | 1.03 g |
| Mammal | Peromyscus melanophrys | Plateau mouse | 940 mg |
| Mammal | Peromyscus melanotis | Black-eared mouse / Black-eared deer mouse | 630 mg |
| Mammal | Peromyscus merriami | Mesquite mouse / Merriam’s deermouse | 560 mg |
| Mammal | Peromyscus mexicanus | Mexican deer mouse / Mexican deermouse | 1.02 g |
| Mammal | Peromyscus pectoralis | White-ankled mouse | 650 mg |
| Mammal | Peromyscus polionotus | Oldfield mouse / Oldfield deermouse / Beach mouse | 415 mg |
| Mammal | Peromyscus truei | Pinyon mouse | 750 mg |
| Mammal | Peromyscus yucatanicus | Yucatan deer mouse / Yucatan deermouse | 700 mg |
| Mammal | Peromyscus zarhynchus | Chiapan deer mouse / Chiapan deermouse | 1.3 g |
| Mammal | Peropteryx macrotis | Lesser dog-like bat / Peters’ sac-winged bat | 157 mg |
| Mammal | Peropteryx trinitatis | Trinidad dog-like bat | 150 mg |
| Mammal | Peroryctes raffrayana | Raffray’s bandicoot | 6.44 g |
| Fish | Pervagor melanocephalus | Redtail filefish | 137 mg |
| Fish | Pervagor spilosoma | Fantail filefish | 116 mg |
| Mammal | Petaurista elegans | Spotted giant flying squirrel / Lesser giant flying squirrel | 7.76 g |
| Mammal | Petaurista petaurista | Red giant flying squirrel / Common giant flying squirrel | 11.8 g |
| Mammal | Petauroides volans | Southern greater glider / Southern and central greater glider | 4.81 g |
| Mammal | Petaurus abidi | Northern glider | 3.9 g |
| Mammal | Petaurus australis | Yellow-bellied glider / Fluffy glider | 5.81 g |
| Mammal | Petaurus biacensis | Biak glider | 1.71 g |
| Mammal | Petaurus breviceps | Sugar glider | 2.19 g |
| Mammal | Petaurus norfolcensis | Squirrel glider | 3.07 g |
| Fish | Petrocephalus binotatus | – | 106 mg |
| Fish | Petrocephalus catostoma | Churchill | 70.4 mg |
| Fish | Petrocephalus christyi | – | 167 mg |
| Fish | Petrocephalus microphthalmus | – | 66 mg |
| Fish | Petrocephalus simus | – | 212 mg |
| Bird | Petrochelidon ariel | Fairy martin | 373 mg |
| Bird | Petrochelidon fulva | Cave swallow | 518 mg |
| Bird | Petrochelidon nigricans | Tree martin | 539 mg |
| Fish | Petrochromis ephippium | – | 205 mg |
| Fish | Petrochromis famula | – | 197 mg |
| Fish | Petrochromis orthognathus | – | 204 mg |
| Mammal | Petrogale assimilis | Allied rock-wallaby / Weasel rock-wallaby | 17.8 g |
| Mammal | Petrogale brachyotis | Short-eared rock-wallaby | 15.6 g |
| Mammal | Petrogale concinna | Nabarlek | 11.2 g |
| Mammal | Petrogale godmani | Godman’s rock-wallaby | 18.3 g |
| Mammal | Petrogale herberti | Herbert’s rock-wallaby | 21.6 g |
| Mammal | Petrogale inornata | Unadorned rock-wallaby | 17.3 g |
| Mammal | Petrogale lateralis | Black-flanked rock-wallaby / Black-footed rock-wallaby / Warru | 19.5 g |
| Mammal | Petrogale mareeba | Mareeba rock-wallaby | 17.3 g |
| Mammal | Petrogale penicillata | Brush-tailed rock-wallaby / Small-eared rock-wallaby | 24.3 g |
| Mammal | Petrogale persephone | Proserpine rock-wallaby | 21.9 g |
| Mammal | Petrogale xanthopus | Yellow-footed rock-wallaby / Ring-tailed rock-wallaby | 23.4 g |
| Bird | Petroica boodang | Scarlet robin | 539 mg |
| Bird | Petroica goodenovii | Red-capped robin | 382 mg |
| Bird | Petroica macrocephala | Tomtit | 668 mg |
| Bird | Petroica multicolor | Norfolk robin / Norfolk Island scarlet robin / Norfolk Island robin | 523 mg |
| Bird | Petroica phoenicea | Flame robin | 508 mg |
| Bird | Petroica rodinogaster | Pink robin | 508 mg |
| Bird | Petroica rosea | Rose robin | 445 mg |
| Fish | Petromyzon marinus | Sea lamprey | 37.5 mg |
| Bird | Petrophassa albipennis | White-quilled rock pigeon | 1.14 g |
| Mammal | Petropseudes dahli | Rock-haunting ringtail possum / Rock ringtail possum | 5.16 g |
| Fish | Petroscirtes mitratus | Floral blenny / Floral fangblenny / Helmeted blenny / Crested sabretooth blenny | 32 mg |
| Bird | Peucaea cassinii | Cassin’s sparrow | 809 mg |
| Bird | Pezoporus wallicus | Ground parrot | 2.76 g |
| Bird | Phacellodomus ruber | Greater thornbird | 1.15 g |
| Mammal | Phacochoerus aethiopicus | Desert warthog | 127 g |
| Mammal | Phacochoerus africanus | Common warthog | 132 g |
| Bird | Phaenicophaeus curvirostris | Chestnut-breasted malkoha | 3.02 g |
| Bird | Phaenicophaeus tristis | Green-billed malkoha | 2.27 g |
| Bird | Phaenicophilus palmarum | Black-crowned palm-tanager / Black-crowned tanager | 1.17 g |
| Bird | Phaenostictus mcleannani | Ocellated antbird | 1.11 g |
| Bird | Phaethon aethereus | Red-billed tropicbird | 3.3 g |
| Bird | Phaethon lepturus | White-tailed tropicbird / Yellow-billed tropicbird | 2.9 g |
| Bird | Phaethon rubricauda | Red-tailed tropicbird | 4.68 g |
| Bird | Phaethornis ruber | Reddish hermit | 167 mg |
| Bird | Phaethornis superciliosus | Long-tailed hermit / Eastern long-tailed hermit | 269 mg |
| Bird | Phaethornis yaruqui | White-whiskered hermit | 270 mg |
| Bird | Phaetusa simplex | Large-billed tern | 3.15 g |
| Bird | Phainopepla nitens | Phainopepla / Northern phainopepla | 818 mg |
| Bird | Phalacrocorax capensis | Cape cormorant / Cape shag | 10 g |
| Bird | Phalacrocorax capillatus | Japanese cormorant / Temminck’s cormorant | 12.1 g |
| Bird | Phalacrocorax carbo | Great cormorant / Cormorant / Black shag / Kawau | 11.4 g |
| Bird | Phalacrocorax fuscescens | Black-faced cormorant / Black-faced shag | 9.21 g |
| Bird | Phalacrocorax sulcirostris | Little black cormorant / Little black shag | 5.84 g |
| Bird | Phalacrocorax varius | Australian pied cormorant / Pied cormorant / Pied shag / Great pied cormorant | 9.54 g |
| Bird | Phalaenoptilus nuttallii | Common poorwill | 549 mg |
| Mammal | Phalanger carmelitae | Mountain cuscus | 8.64 g |
| Mammal | Phalanger gymnotis | Ground cuscus | 13.2 g |
| Mammal | Phalanger intercastellanus | Eastern common cuscus | 7.48 g |
| Mammal | Phalanger lullulae | Woodlark cuscus | 6.2 g |
| Mammal | Phalanger mimicus | Southern common cuscus / Australian cuscus / Gray phalanger | 8.68 g |
| Mammal | Phalanger orientalis | Northern common cuscus / Gray cuscus | 7.87 g |
| Mammal | Phalanger ornatus | Ornate cuscus / Molluccan cuscus | 7.15 g |
| Mammal | Phalanger rothschildi | Rothschild’s cuscus / Obi Island cuscus | 6.25 g |
| Mammal | Phalanger sericeus | Silky cuscus | 10.1 g |
| Mammal | Phalanger vestitus | Stein’s cuscus | 9.71 g |
| Bird | Phalaropus fulicarius | Red phalarope / Grey phalarope | 580 mg |
| Bird | Phalaropus lobatus | Red-necked phalarope / Northern phalarope / Hyperborean phalarope | 468 mg |
| Bird | Phalaropus tricolor | Wilson’s phalarope | 673 mg |
| Mammal | Phaner electromontis | Amber Mountain fork-marked lemur / Montagne d’Ambre fork-crowned lemur / Tanta | 7.2 g |
| Mammal | Phaner furcifer | Masoala fork-marked lemur / Eastern fork-marked lemur / Masoala fork-crowned lemur | 6.47 g |
| Mammal | Phaner pallescens | Pale fork-marked lemur / Western fork-marked lemur | 6.68 g |
| Bird | Phapitreron amethystinus | Amethyst brown dove | 1.34 g |
| Bird | Phapitreron leucotis | White-eared brown dove | 1.17 g |
| Bird | Phaps chalcoptera | Common bronzewing | 1.77 g |
| Bird | Phaps elegans | Brush bronzewing | 1.71 g |
| Bird | Phaps histrionica | Flock bronzewing / Flock pigeon / Harlequin bronzewing / Harlequin pigeon | 1.71 g |
| Bird | Pharomachrus mocinno | Resplendent quetzal | 2.42 g |
| Mammal | Phascogale calura | Red-tailed phascogale / Red-tailed wambenger / Red-tailed mousesack / Kenngoor | 926 mg |
| Mammal | Phascogale tapoatafa | Brush-tailed phascogale / Common wambenger / Tuan / Black-tailed mousesack | 1.84 g |
| Mammal | Phascolarctos cinereus | Koala | 20.6 g |
| Mammal | Phascolosorex dorsalis | Narrow-striped dasyure / Narrow-striped marsupial shrew | 1.13 g |
| Bird | Phasianus colchicus | Common pheasant / Ring-necked pheasant / Blue-headed pheasant | 3.67 g |
| Bird | Phasianus versicolor | Green pheasant / Japanese green pheasant / Kiji | 4.22 g |
| Mammal | Phataginus tricuspis | White-bellied pangolin / Tree pangolin / Three-cusped pangolin | 9.35 g |
| Insect | Pheidole obscurithorax | – | 0.03 mg |
| Reptile | Phelsuma cepediana | Blue-tailed day gecko / Lacépède’s gecko | 59 mg |
| Reptile | Phelsuma grandis | Madagascar giant day gecko / Giant day gecko | 154 mg |
| Reptile | Phelsuma standingi | Standing’s day gecko | 179 mg |
| Mammal | Phenacodus primaevus | – | 31 g |
| Bird | Pheucticus ludovicianus | Rose-breasted grosbeak | 1.34 g |
| Spider | Phidippus regius | Regal jumper | 0.275 mg |
| Mammal | Philander opossum | Gray four-eyed opossum | 3.7 g |
| Mammal | Philantomba maxwellii | Maxwell’s duiker | 38 g |
| Mammal | Philantomba monticola | Blue duiker | 50 g |
| Bird | Philemon argenticeps | Silver-crowned friarbird | 1.76 g |
| Bird | Philemon buceroides | Helmeted friarbird | 2.23 g |
| Bird | Philemon citreogularis | Little friarbird / Little leatherhead / Yellow-throated friarbird | 1.64 g |
| Bird | Philemon corniculatus | Noisy friarbird | 2.05 g |
| Bird | Philemon diemenensis | New Caledonian friarbird | 1.61 g |
| Bird | Phleocryptes melanops | Wren-like rushbird | 712 mg |
| Mammal | Phoca largha | Spotted seal / Larga seal / Largha seal | 254 g |
| Mammal | Phoca vitulina | Harbor seal / Common seal / Harbour seal | 308 g |
| Mammal | Phocarctos hookeri | New Zealand sea lion / Hooker’s sea lion | 394 g |
| Mammal | Phocoena phocoena | Harbour porpoise | 924 g |
| Mammal | Phocoena spinipinnis | Burmeister’s porpoise | 597 g |
| Mammal | Phocoenoides dalli | Dall’s porpoise | 842 g |
| Bird | Phoebastria immutabilis | Laysan albatross | 14.9 g |
| Bird | Phoebastria nigripes | Black-footed albatross | 16.4 g |
| Bird | Phoebetria palpebrata | Light-mantled albatross / Grey-mantled albatross / Light-mantled sooty albatross | 16.8 g |
| Bird | Phoeniconaias minor | Lesser flamingo | 7.2 g |
| Bird | Phoenicoparrus andinus | Andean flamingo | 10.4 g |
| Bird | Phoenicoparrus jamesi | James’s flamingo / Puna flamingo | 8.78 g |
| Bird | Phoenicopterus chilensis | Chilean flamingo | 9.38 g |
| Bird | Phoenicopterus roseus | Greater flamingo | 10.8 g |
| Bird | Phoenicopterus ruber | American flamingo / Caribbean flamingo | 10.4 g |
| Bird | Phoeniculus purpureus | Green wood hoopoe / Red-billed wood hoopoe | 2.02 g |
| Bird | Phoenicurus fuliginosus | Plumbeous water redstart | 642 mg |
| Bird | Phoenicurus ochruros | Black redstart / Tithys redstart /Black redtail | 625 mg |
| Bird | Phoenicurus phoenicurus | Common redstart | 513 mg |
| Fish | Pholis gunnellus | Rock gunnel / Butterfish | 20 mg |
| Mammal | Phoniscus atrox | Groove-toothed bat | 188 mg |
| Fish | Photolateralis moretoniensis | Moreton Bay ponyfish | 50 mg |
| Bird | Phrygilus patagonicus | Patagonian sierra finch | 1.06 g |
| Amphibian | Phrynobatrachus calcaratus | Boutry river frog / Peters’ puddle frog | 12.4 mg |
| Reptile | Phrynocephalus przewalskii | Przewalski’s toadhead agama / Tsarewsky’s toadhead agama / Steindachner’s toadhead agama | 427 mg |
| Amphibian | Phrynomantis bifasciatus | Banded rubber frog | 29 mg |
| Reptile | Phrynosoma coronatum | Coast horned lizard | 132 mg |
| Fish | Phycis blennoides | Greater forkbeard | 1.21 g |
| Bird | Phylidonyris niger | White-cheeked honeyeater | 829 mg |
| Bird | Phylidonyris novaehollandiae | New Holland honeyeater | 931 mg |
| Bird | Phyllastrephus terrestris | Terrestrial brownbul / Bristle-necked brownbul / Brownbul / Scrub bulbul | 1.07 g |
| Amphibian | Phyllobates lugubris | Lovely poison frog / Lovely poison-arrow frog | 20.9 mg |
| Reptile | Phyllodactylus gerrhopygus | South American leaf-toed gecko | 18 mg |
| Reptile | Phyllodactylus gerrhopygus | South American leaf-toed gecko | 18 mg |
| Mammal | Phylloderma stenops | Pale-faced bat | 1.34 g |
| Amphibian | Phyllomedusa bicolor | Giant leaf frog / Bicolor tree-frog / Giant monkey frog / Waxy-monkey treefrog | 20.1 mg |
| Amphibian | Phyllomedusa sauvagii | Waxy monkey leaf frog / Waxy monkey tree frog | 56.3 mg |
| Bird | Phylloscopus bonelli | Western Bonelli’s warbler | 354 mg |
| Bird | Phylloscopus collybita | Common chiffchaff | 358 mg |
| Bird | Phylloscopus sibilatrix | Wood warbler | 371 mg |
| Bird | Phylloscopus trochilus | Willow warbler | 330 mg |
| Mammal | Phyllostomus discolor | Pale spear-nosed bat | 981 mg |
| Mammal | Phyllostomus elongatus | Lesser spear-nosed bat | 885 mg |
| Mammal | Phyllostomus hastatus | Greater spear-nosed bat | 1.52 g |
| Mammal | Physeter macrocephalus | Sperm whale / Cachalot | 8.24 kg |
| Reptile | Physignathus cocincinus | Chinese water dragon / Indochinese water dragon / Asian water dragon / Thai water dragon | 519 mg |
| Bird | Phytotoma rara | Rufous-tailed plantcutter / Chilean plantcutter | 1.2 g |
| Bird | Phytotoma rutila | White-tipped plantcutter | 756 mg |
| Bird | Piaya cayana | Common squirrel cuckoo | 1.92 g |
| Bird | Piaya melanogaster | Black-bellied cuckoo / Black-bellied squirrel cuckoo | 1.89 g |
| Bird | Pica nuttallii | Yellow-billed magpie / California magpie | 4.3 g |
| Bird | Pica pica | Eurasian magpie / Common magpie | 5.3 g |
| Bird | Picoides arcticus | Black-backed woodpecker / Arctic three-toed woodpecker | 3.26 g |
| Bird | Picoides tridactylus | Eurasian three-toed woodpecker | 2.72 g |
| Bird | Piculus flavigula | Yellow-throated woodpecker | 1.69 g |
| Bird | Picumnus temminckii | Ochre-collared piculet | 622 mg |
| Bird | Picus awokera | Japanese green woodpecker / Japanese woodpecker | 3.44 g |
| Bird | Picus canus | Grey-headed woodpecker / Grey-faced woodpecker | 3.71 g |
| Bird | Picus viridis | European green woodpecker / Yaffle / Nickle | 4.35 g |
| Mammal | Piliocolobus badius | Western red colobus / Bay red colobus / Rust red colobus / Upper Guinea red colobus | 78 g |
| Mammal | Piliocolobus kirkii | Zanzibar red colobus / Kirk’s red colobus | 57.3 g |
| Mammal | Piliocolobus tephrosceles | Ugandan red colobus / Ashy red colobus | 71 g |
| Fish | Pimelodus pictus | Pictus cat / Pictus catfish | 47 mg |
| Bird | Pinicola enucleator | Pine grosbeak | 1.64 g |
| Bird | Pionites leucogaster | White-bellied parrot / White-bellied caique | 5.39 g |
| Bird | Pionites melanocephalus | Black-headed parrot / Black-crowned parrot / Black-capped parrot / Black-headed caique | 5.37 g |
| Bird | Pionopsitta pileata | Pileated parrot / Red-capped parrot | 2.87 g |
| Bird | Pionus maximiliani | Scaly-headed parrot / Scaly-headed pionus / Maximilian pionus / Maximilian parrot | 5.8 g |
| Bird | Pionus menstruus | Blue-headed parrot / Blue-headed pionus | 5.69 g |
| Bird | Pionus senilis | White-crowned parrot / White-crowned pionus | 6.22 g |
| Bird | Pipile pipile | Trinidad piping guan / Pawi | 5.49 g |
| Bird | Pipilo erythrophthalmus | Eastern towhee / Chewink / Joree / Joree bird | 1.41 g |
| Mammal | Pipistrellus ceylonicus | Kelaart’s pipistrelle | 182 mg |
| Mammal | Pipistrellus coromandra | Indian pipistrelle | 105 mg |
| Mammal | Pipistrellus javanicus | Javan pipistrelle / Eastern pipistrelle | 119 mg |
| Mammal | Pipistrellus kuhlii | Kuhl’s pipistrelle | 166 mg |
| Mammal | Pipistrellus papuanus | Lesser Papuan pipistrelle | 110 mg |
| Mammal | Pipistrellus tenuis | Least pipistrelle | 113 mg |
| Bird | Pipra fasciicauda | Band-tailed manakin | 641 mg |
| Bird | Piranga ludoviciana | Western tanager | 1.02 g |
| Bird | Piranga rubra | Summer tanager | 1.06 g |
| Bird | Pitangus sulphuratus | Great kiskadee | 1.36 g |
| Mammal | Pithecia irrorata | Rio Tapajós saki / Gray’s bald-faced saki | 39.5 g |
| Mammal | Pithecia monachus | Monk saki / Geoffroy’s monk saki | 35.2 g |
| Mammal | Pithecia pithecia | White-faced saki | 32.7 g |
| Bird | Pithecophaga jefferyi | Philippine eagle / Monkey-eating eagle / Great Philippine eagle | 20.5 g |
| Bird | Pithys albifrons | White-plumed antbird | 641 mg |
| Bird | Pitohui dichrous | Hooded pitohui | 1.95 g |
| Bird | Pitta brachyura | Indian pitta | 1.44 g |
| Bird | Pitta maxima | Ivory-breasted pitta | 2.62 g |
| Bird | Pitta sordida | Western hooded pitta | 1.3 g |
| Bird | Pitta versicolor | Noisy pitta | 1.94 g |
| Fish | Plagiotremus ewaensis | Ewa blenny / Ewa fangblenny / Blue-stripe blenny | 18 mg |
| Fish | Plagiotremus tapeinosoma | Mimic blenny / Piano fangblenny | 25 mg |
| Fish | Plagiotremus townsendi | Townsend’s fangblenny | 8.3 mg |
| Mammal | Planigale gilesi | Paucident planigale / Giles’ planigale | 173 mg |
| Mammal | Planigale ingrami | Long-tailed planigale / Ingram’s planigale / Northern planigale | 153 mg |
| Mammal | Planigale maculata | Common planigale / Pygmy planigale / Coastal planigale | 204 mg |
| Mammal | Planigale novaeguineae | New Guinean planigale / Papuan planigale | 275 mg |
| Mammal | Planigale tenuirostris | Narrow-nosed planigale | 143 mg |
| Fish | Planiliza carinata | Keeled mullet | 38 mg |
| Bird | Platalea ajaja | Roseate spoonbill | 11.3 g |
| Bird | Platalea alba | African spoonbill | 11.3 g |
| Bird | Platalea flavipes | Yellow-billed spoonbill | 11.5 g |
| Bird | Platalea leucorodia | Eurasian spoonbill / Common spoonbill | 10.8 g |
| Bird | Platalea regia | Royal spoonbill / Black-billed spoonbill | 11.6 g |
| Mammal | Platanista gangetica | Ganges river dolphin | 294 g |
| Fish | Platax orbicularis | Orbicular batfish / Cooper batfish / Circular batfish / Orbiculate batfish | 995 mg |
| Reptile | Platemys platycephala | Twist-necked turtle / Flat-headed turtle | 366 mg |
| Fish | Platybelone argalus | Keeltail needlefish / Keeled needlefish | 402 mg |
| Fish | Platycephalus indicus | Bartail flathead / Indian flathead / Gobi / Indo-Pacific flathead | 100 mg |
| Reptile | Platyceps karelini | Spotted desert racer | 97.5 mg |
| Bird | Platycercus adscitus | Pale-headed rosella | 3.17 g |
| Bird | Platycercus caledonicus | Green rosella / Tasmanian rosella | 3.51 g |
| Bird | Platycercus elegans | Crimson rosella | 3.92 g |
| Bird | Platycercus eximius | Eastern rosella | 2.86 g |
| Bird | Platycercus icterotis | Western rosella / Moyadong / Rosella / Stanley rosella | 2.47 g |
| Bird | Platycercus venustus | Northern rosella / Brown’s rosella /Smutty rosella | 2.65 g |
| Fish | Platygillellus rubrocinctus | Saddle stargazer | 5.38 mg |
| Bird | Platylophus galericulatus | Crested jayshrike / Crested shrikejay / Crested jay | 2.5 g |
| Amphibian | Platymantis vitiensis | Fiji tree frog / Levuka wrinkled ground frog | 4.92 mg |
| Fish | Platyrhinoidis triseriata | Thornback guitarfish | 1.32 g |
| Bird | Platyrinchus cancrominus | Stub-tailed spadebill | 509 mg |
| Bird | Platyrinchus mystaceus | White-throated spadebill | 414 mg |
| Mammal | Platyrrhinus brachycephalus | Short-headed broad-nosed bat | 583 mg |
| Mammal | Platyrrhinus helleri | Heller’s broad-nosed bat | 455 mg |
| Mammal | Platyrrhinus infuscus | Buffy broad-nosed bat | 1.11 g |
| Mammal | Platyrrhinus lineatus | White-lined broad-nosed bat | 741 mg |
| Mammal | Platyrrhinus vittatus | Greater broad-nosed bat | 1.18 g |
| Bird | Platysteira cyanea | Brown-throated wattle-eye / Common wattle-eye / Scarlet-spectacled wattle-eye | 709 mg |
| Mammal | Plecotus auritus | Brown long-eared bat / Common long-eared bat | 234 mg |
| Fish | Plectorhinchus gaterinus | Blackspotted rubberlip / African grunt | 1.13 g |
| Fish | Plectorhinchus lineatus | Yellowbanded sweetlips / Oblique-banded sweetlips / Diagonal-banded sweetlips / Goldman’s sweetlips | 1.23 g |
| Bird | Plectorhyncha lanceolata | Striped honeyeater | 1.13 g |
| Fish | Plectroglyphidodon dickii | Blackbar devil / Dick’s damsel / Narrowbar damselfish | 114 mg |
| Fish | Plectroglyphidodon johnstonianus | Johnstone Island damselfish | 95 mg |
| Fish | Plectroglyphidodon leucozonus | Singlebar devil | 112 mg |
| Bird | Plectrophenax nivalis | Snow bunting | 1.06 g |
| Fish | Plectropomus laevis | Black-saddled coral grouper / Cluespotted coral trout / Blacksaddled coral trout / Blue-spot trout | 573 mg |
| Fish | Plectropomus leopardus | Leopard coral grouper / Common coral trout / Leopard coral trout / Blue-dotted coral grouper | 1.32 g |
| Fish | Plectropomus maculatus | Spotted coral grouper / Barcheek coral trout / Coastal coral trout | 1.18 g |
| Bird | Plectropterus gambensis | Spur-winged goose | 13.5 g |
| Fish | Plectrypops lima | Shy soldier | 277 mg |
| Mammal | Plecturocebus caligatus | Chestnut-bellied titi monkey / Booted titi | 17.3 g |
| Mammal | Plecturocebus cupreus | Coppery titi monkey / Red titi monkey | 16.9 g |
| Mammal | Plecturocebus discolor | White-tailed titi monkey | 17.5 g |
| Mammal | Plecturocebus moloch | Red-bellied titi monkey / Dusky titi | 18.1 g |
| Bird | Plegadis chihi | White-faced ibis | 4.91 g |
| Bird | Plegadis falcinellus | Glossy ibis / Black curlew | 4.95 g |
| Bird | Plesiodryas albonotata | Black-throated robin | 1.35 g |
| Fish | Plesiops coeruleolineatus | Crimsontip longfin / Coral devil | 26.5 mg |
| Amphibian | Plethodon cinereus | Red-backed salamander / Redback salamander / Eastern red-backed salamander / Northern red-backed salamander | 4.85 mg |
| Amphibian | Plethodon glutinosus | Northern slimy salamander / Viscid salamander / Grey-spotted salamander / Slippery salamander | 12.8 mg |
| Amphibian | Plethodon jordani | Red-cheeked salamander / Jordan’s salamander / Jordan’s redcheek salamander / Appalachian woodland salamander | 6 mg |
| Amphibian | Plethodon richmondi | Ravine salamander | 8.4 mg |
| Amphibian | Plethodon shermani | Red-legged salamander | 6 mg |
| Mammal | Pleuraspidotherium | – | 6 g |
| Amphibian | Pleurodeles waltl | Iberian ribbed newt / Spanish ribbed newt / Gallipato / Sharp-ribbed newt | 32.3 mg |
| Bird | Plocepasser mahali | White-browed sparrow-weaver / Black-billed mahali weaverbird / Black-billed sparrow weaver / Kismayu sparrow-weaver | 1.27 g |
| Bird | Ploceus cucullatus | Village weaver / Spotted-backed weaver / Black-headed weaver | 1.42 g |
| Bird | Ploceus melanocephalus | Black-headed weaver / Yellow-backed weaver | 1.14 g |
| Fish | Plotosus lineatus | Striped eel catfish | 272 mg |
| Bird | Pluvialis apricaria | European golden plover / Eurasian golden plover / Greater golden plover / Golden plover | 2.22 g |
| Bird | Pluvialis dominica | American golden plover | 1.84 g |
| Bird | Pluvialis fulva | Pacific golden plover | 1.85 g |
| Bird | Pluvialis squatarola | Grey plover / Black-bellied plover | 2.5 g |
| Bird | Pluvianellus socialis | Magellanic plover | 1.18 g |
| Bird | Pluvianus aegyptius | Egyptian plover / Crocodile bird | 1.33 g |
| Reptile | Podarcis hispanicus | Iberian wall lizard | 39.9 mg |
| Reptile | Podarcis liolepis | Columbretes wall lizard / Catalan wall lizard | 40 mg |
| Reptile | Podarcis melisellensis | Dalmatian wall lizard | 58.7 mg |
| Reptile | Podarcis muralis | Common wall lizard / European wall lizard | 41.4 mg |
| Reptile | Podarcis siculus | Italian wall lizard / Ruin lizard | 49.5 mg |
| Bird | Podargus strigoides | Tawny frogmouth | 5.18 g |
| Bird | Podiceps auritus | Horned grebe / Slavonian grebe | 2.46 g |
| Bird | Podiceps cristatus | Great crested grebe | 3.55 g |
| Bird | Podiceps grisegena | Red-necked grebe | 3.56 g |
| Bird | Podiceps major | Great grebe | 3.83 g |
| Bird | Podiceps nigricollis | Black-necked grebe / Eared grebe | 1.73 g |
| Bird | Podilymbus podiceps | Pied-billed grebe / American dabchick / Dabchick / Carolina grebe | 3.27 g |
| Bird | Podoces hendersoni | Mongolian ground jay / Henderson’s ground jay | 3.57 g |
| Bird | Podoces panderi | Turkestan ground jay / Grey ground jay / Pander’s ground-jay | 2.6 g |
| Mammal | Podomys floridanus | Florida mouse | 940 mg |
| Bird | Poecile atricapillus | Black-capped chickadee | 686 mg |
| Bird | Poecile carolinensis | Carolina chickadee | 621 mg |
| Bird | Poecile gambeli | Mountain chickadee | 779 mg |
| Bird | Poecile hudsonicus | Boreal chickadee | 738 mg |
| Bird | Poecile montanus | Willow tit | 790 mg |
| Bird | Poecile palustris | Marsh tit | 660 mg |
| Fish | Poecilia mexicana | Atlantic molly | 13 mg |
| Fish | Poecilia petenensis | Petén molly | 18.6 mg |
| Fish | Poecilia reticulata | Guppy / Millionfish / Rainbow fish | 4.99 mg |
| Fish | Poecilia sulphuraria | Sulphur molly | 12.7 mg |
| Fish | Poecilia vivipara | Southern molly | 4.8 mg |
| Bird | Poecilodryas cerviniventris | Buff-sided robin | 746 mg |
| Bird | Poecilodryas superciliosa | White-browed robin | 953 mg |
| Mammal | Poecilogale albinucha | African striped weasel / White-naped weasel / Striped weasel / African weasel | 4.61 g |
| Bird | Poeoptera lugubris | Narrow-tailed starling | 1.03 g |
| Bird | Poephila acuticauda | Long-tailed finch / Longtail finch / Blackheart finch / Shaft-tail finch | 516 mg |
| Bird | Poephila cincta | Black-throated finch / Parson finch | 499 mg |
| Bird | Poephila personata | Masked finch | 519 mg |
| Reptile | Pogona vitticeps | Central bearded dragon / Inland bearded dragon | 412 mg |
| Bird | Pogoniulus scolopaceus | Speckled tinkerbird | 456 mg |
| Insect | Pogonomyrmex badius | Florida harvester ant | 0.139 mg |
| Insect | Pogonomyrmex maricopa | Maricopa harvester ant | 0.107 mg |
| Insect | Pogonomyrmex rugosus | Desert harvester ant / Rough harvester ant | 0.2 mg |
| Mammal | Pogonomys macrourus | Chestnut tree mouse | 1.43 g |
| Mammal | Pogonomys sylvestris | Gray-bellied tree mouse | 1.13 g |
| Bird | Poicephalus cryptoxanthus | Brown-headed parrot | 4.82 g |
| Bird | Poicephalus gulielmi | Red-fronted parrot / Jardine’s parrot | 7.41 g |
| Bird | Poicephalus meyeri | Meyer’s parrot / Brown parrot | 4.28 g |
| Bird | Poicephalus robustus | Cape parrot / Levaillant’s parrot | 8.51 g |
| Bird | Poicephalus senegalus | Senegal parrot | 4.88 g |
| Bird | Polemaetus bellicosus | Martial eagle | 17.1 g |
| Bird | Polihierax semitorquatus | African pygmy falcon / Pygmy falcon | 1.58 g |
| Bird | Poliocephalus poliocephalus | Hoary-headed grebe | 1.78 g |
| Mammal | Poliocitellus franklinii | Franklin’s ground squirrel | 3.86 g |
| Bird | Poliocrania exsul | Chestnut-backed antbird | 1.07 g |
| Bird | Polioptila caerulea | Blue-gray gnatcatcher | 311 mg |
| Bird | Polioptila dumicola | Masked gnatcatcher | 430 mg |
| Insect | Polistes arizonensis | Arizona paper wasp | 2.16 mg |
| Insect | Polistes dominula | European paper wasp | 1.03 mg |
| Insect | Polistes flavus | Yellow paper wasp | 1.25 mg |
| Insect | Polistes flavus | Yellow paper wasp | 3.67 mg |
| Insect | Polistes fuscatus | Dark paper wasp / Northern paper wasp | 1.22 mg |
| Insect | Polistes instabilis | Unstable paper wasp | 0.51 mg |
| Fish | Pollachius pollachius | Pollock / Pollack / European pollock | 1.25 g |
| Fish | Pollachius virens | Pollock / Pollack / Coalfish / Coley | 2.14 g |
| Fish | Pollimyrus adspersus | – | 130 mg |
| Fish | Pollimyrus isidori | Elephant Fish | 115 mg |
| Insect | Polybia aequatorialis | – | 0.2 mg |
| Insect | Polybia dimidiata | – | 0.357 mg |
| Insect | Polybia emaciata | – | 0.17 mg |
| Insect | Polybia flavitincta | – | 0.398 mg |
| Insect | Polybia jurinei | – | 0.416 mg |
| Insect | Polybia plebeja | – | 0.149 mg |
| Insect | Polybia raui | – | 0.234 mg |
| Insect | Polybia rejecta | – | 0.279 mg |
| Insect | Polybia richardsi | – | 0.18 mg |
| Bird | Polyboroides radiatus | Madagascar harrier-hawk | 7.7 g |
| Bird | Polyboroides typus | African harrier-hawk / Harrier hawk / Gymnogene | 8.29 g |
| Fish | Polydactylus multiradiatus | Australian threadfin | 183 mg |
| Fish | Polydactylus sextarius | Blackspot threadfin | 224 mg |
| Amphibian | Polypedates braueri | White-lipped treefrog / Java treefrog | 56 mg |
| Amphibian | Polypedates impresus | – | 40.8 mg |
| Amphibian | Polypedates megacephalus | Hong Kong whipping frog / Spot-legged tree frog | 44.8 mg |
| Amphibian | Polypedates mutus | Northern treefrog / Burmese whipping frog / Vocal sacless treefrog | 41.8 mg |
| Bird | Polyplectron bicalcaratum | Grey peacock-pheasant / Burmese peacock-pheasant | 3.1 g |
| Fish | Polypterus palmas | Shortfin / Marbled bichir | 96 mg |
| Bird | Polysticta stelleri | Steller’s eider | 5.47 g |
| Bird | Polytelis alexandrae | Princess parrot / Queen Alexandra parrot / Alexandra’s parakeet / Princess of Wales parakeet | 2.92 g |
| Bird | Polytelis anthopeplus | Regent parrot / Rock pebbler | 3.99 g |
| Bird | Polytelis swainsonii | Superb parrot / Barraband’s parrot / Barraband’s parakeet / Green leek parrot | 3.37 g |
| Fish | Pomacanthus imperator | Emperor angelfish | 631 mg |
| Fish | Pomacanthus maculosus | Yellowbar angelfish / Half-moon angelfish / Yellow-marked angelfish / Yellowband angelfish | 911 mg |
| Fish | Pomacanthus paru | French angelfish | 230 mg |
| Fish | Pomacanthus semicirculatus | Semicircled angelfish / Koran angelfish / Blue angelfish / Zebra angelfish | 809 mg |
| Fish | Pomacanthus sexstriatus | Sixbar angelfish / Six banded angelfish | 826 mg |
| Fish | Pomacentrus albicaudatus | Whitefin damsel | 114 mg |
| Fish | Pomacentrus pavo | Sapphire damsel / Peacock damsel / Blue damsel | 58 mg |
| Fish | Pomacentrus philippinus | Philippine damsel | 154 mg |
| Fish | Pomacentrus sulfureus | Sulphur damsel | 67 mg |
| Fish | Pomacentrus trichrourus | Paletail damsel | 80 mg |
| Fish | Pomacentrus vaiuli | Ocellate damselfish | 58 mg |
| Fish | Pomadasys argenteus | Silver grunt / Silver javelin / Grunter bream / Small-spotted grunter-bream | 606 mg |
| Fish | Pomadasys maculatus | Saddle grunt / Blotched grunt / Blotched javelin | 92 mg |
| Fish | Pomadasys stridens | Striped piggy / Lined piggy | 130 mg |
| Bird | Pomatorhinus ruficollis | Streak-breasted scimitar babbler | 1.59 g |
| Fish | Pomatoschistus flavescens | Two-spotted goby | 17.1 mg |
| Fish | Pomatoschistus marmoratus | Marbled goby | 12.2 mg |
| Fish | Pomatoschistus microps | Common goby | 14.4 mg |
| Fish | Pomatoschistus minutus | Sand goby / Polewig / Pollybait | 24.5 mg |
| Fish | Pomatoschistus pictus | Painted goby | 11.2 mg |
| Bird | Pomatostomus halli | Hall’s babbler | 1.66 g |
| Bird | Pomatostomus ruficeps | Chestnut-crowned babbler | 2.43 g |
| Bird | Pomatostomus superciliosus | White-browed babbler | 1.57 g |
| Bird | Pomatostomus temporalis | Grey-crowned babbler / Yahoo / Grey-crowned chatterer / Happy-jack | 1.97 g |
| Mammal | Pongo abelii | Sumatran orangutan | 389 g |
| Mammal | Pongo pygmaeus | Bornean orangutan | 345 g |
| Mammal | Pontoporia blainvillei | La Plata dolphin / Franciscana / Toninha | 221 g |
| Bird | Poodytes gramineus | Little grassbird | 580 mg |
| Bird | Pooecetes gramineus | Vesper sparrow | 826 mg |
| Bird | Poospiza nigrorufa | Black-and-rufous warbling finch | 725 mg |
| Fish | Poroderma pantherinum | Leopard catshark | 2.07 g |
| Fish | Poromitra crassiceps | Crested bigscale / Large-headed midnight fish / Crested melamphid / One-horned melamphaid | 92 mg |
| Bird | Porphyrio hochstetteri | South Island takahē / Takahē / Notornis | 8.7 g |
| Bird | Porphyrio martinica | Purple gallinule / Yellow-legged gallinule | 2.56 g |
| Bird | Porphyrio porphyrio | Western swamphen | 4.98 g |
| Bird | Porphyriops melanops | Spot-flanked gallinule | 1.57 g |
| Bird | Porzana carolina | Sora / Sora rail / Carolina crake | 1.2 g |
| Bird | Porzana fluminea | Australian crake / Australian spotted crake / Spotted crake | 1.07 g |
| Bird | Porzana porzana | Spotted crake | 1.2 g |
| Mammal | Potamochoerus porcus | Red river hog / Bushpig | 147 g |
| Mammal | Potamogale velox | Giant otter shrew | 4.01 g |
| Fish | Potamotrygon motoro | Ocellate river stingray / Peacock-eye stingray / Black river stingray | 4.51 g |
| Mammal | Potorous platyops | Broad-faced potoroo | 6.41 g |
| Mammal | Potorous tridactylus | Long-nosed potoroo | 10.2 g |
| Mammal | Potos flavus | Kinkajou | 31.2 g |
| Mammal | Praomys daltoni | Dalton’s mouse / Dalton’s praomys | 680 mg |
| Mammal | Praomys morio | Cameroon soft-furred mouse / Cameroon praomys | 840 mg |
| Mammal | Praomys tullbergi | Tullberg’s soft-furred mouse / Tullberg’s praomys | 860 mg |
| Mammal | Presbytis chrysomelas | Sarawak surili / Bornean banded langur / Cross-marked langur | 72.1 g |
| Mammal | Presbytis comata | Javan surili | 80.3 g |
| Mammal | Presbytis femoralis | Raffles’ banded langur / Banded leaf monkey / Banded surili | 73.7 g |
| Mammal | Presbytis frontata | White-fronted surili | 81 g |
| Mammal | Presbytis hosei | Hose’s langur | 60 g |
| Mammal | Presbytis melalophos | Black-crested Sumatran langur | 63.1 g |
| Mammal | Presbytis natunae | Natuna Island surili | 57.2 g |
| Mammal | Presbytis potenziani | Mentawai langur | 57 g |
| Mammal | Presbytis rubicunda | Maroon langur / Maroon leaf monkey / Red leaf monkey | 71 g |
| Mammal | Presbytis siamensis | White-thighed surili | 60.9 g |
| Mammal | Presbytis thomasi | Thomas’s langur / North Sumatran leaf monkey / Thomas’s leaf monkey | 72.9 g |
| Fish | Priacanthus hamrur | Lunar-tailed bigeye / Goggle eye / Moontail bullseye | 760 mg |
| Bird | Primolius auricollis | Golden-collared macaw / Yellow-collared macaw | 7.8 g |
| Bird | Primolius maracana | Blue-winged macaw / Illiger’s macaw | 7.49 g |
| Mammal | Priodontes maximus | Giant armadillo / Tatu-canastra / Tatou / Ocarro | 81 g |
| Fish | Priolepis cincta | Girdled goby | 8.1 mg |
| Fish | Prionace glauca | Blue shark / Great blue shark | 21 g |
| Mammal | Prionailurus bengalensis | Leopard cat | 29.4 g |
| Mammal | Prionailurus planiceps | Flat-headed cat | 22 g |
| Mammal | Prionailurus rubiginosus | Rusty-spotted cat | 18.9 g |
| Mammal | Prionailurus viverrinus | Fishing cat | 46.5 g |
| Bird | Prioniturus montanus | Montane racket-tail / Luzon racket-tail | 3.83 g |
| Bird | Prioniturus platurus | Golden-mantled racket-tail | 4.93 g |
| Fish | Prionobutis microps | Small-eyed loter | 152 mg |
| Bird | Prionochilus plateni | Palawan flowerpecker | 414 mg |
| Mammal | Prionodon linsang | Banded linsang | 8.5 g |
| Mammal | Prionodon pardicolor | Spotted linsang | 9.03 g |
| Bird | Prionodura newtoniana | Golden bowerbird | 1.68 g |
| Bird | Prionops plumatus | White-crested helmetshrike / White helmetshrike | 1.2 g |
| Bird | Priotelus roseigaster | Hispaniolan trogon | 1.36 g |
| Bird | Priotelus temnurus | Cuban trogon / Tocororo | 1.2 g |
| Fish | Pristiapogon exostigma | Eyeshadow cardinalfish / Oneline cardinalfish | 83 mg |
| Fish | Pristiapogon fraenatus | Bridled cardinalfish | 86 mg |
| Fish | Pristiapogon kallopterus | Iridescent cardinalfish | 130 mg |
| Fish | Pristiapogon taeniopterus | Bandfin cardinalfish | 173 mg |
| Fish | Pristicon trimaculatus | Three-spot cardinalfish | 146 mg |
| Fish | Pristigenys niphonia | Japanese bigeye | 665 mg |
| Fish | Pristiophorus cirratus | Longnose sawshark / Common sawshark | 1.66 g |
| Fish | Pristiophorus nudipinnis | Shortnose sawshark / Southern sawshark | 355 mg |
| Fish | Pristipomoides argyrogrammicus | Ornate jobfish | 629 mg |
| Fish | Pristipomoides filamentosus | Crimson jobfish / Rosy snapper / Bluespot jobfish / Crimson snapper | 626 mg |
| Fish | Pristipomoides typus | Sharptooth jobfish / White snapper / White jobfish / Goldband snapper | 1.66 g |
| Bird | Probosciger aterrimus | Palm cockatoo / Goliath cockatoo / Great black cockatoo | 19.9 g |
| Mammal | Procavia capensis | Rock hyrax / Dassie / Rickaz / Cape hyrax | 19.2 g |
| Bird | Procellaria aequinoctialis | White-chinned petrel / Cape hen / Shoemaker | 9.31 g |
| Bird | Procellaria cinerea | Grey petrel / Gray petrel / Brown petrel / Pediunker | 8.8 g |
| Bird | Procnias nudicollis | Bare-throated bellbird | 2.8 g |
| Mammal | Procolobus verus | Olive colobus monkey / Green colobus / Van Beneden’s colobus | 52.6 g |
| Mammal | Procyon cancrivorus | Crab-eating raccoon / Southern raccoon / South American raccoon / Aguará | 52.6 g |
| Mammal | Procyon lotor | North American raccoon / Common raccoon / Northern raccoon | 39.3 g |
| Mammal | Proechimys brevicauda | Short-tailed spiny-rat / Huallaga spiny rat | 2.95 g |
| Mammal | Proechimys semispinosus | Tome’s spiny rat / Tomes’ spiny rat / Central American spiny rat | 6.87 g |
| Bird | Progne subis | Purple martin | 1.07 g |
| Mammal | Propithecus coquereli | Coquerel’s sifaka | 28.4 g |
| Mammal | Propithecus coronatus | Crowned sifaka | 31.6 g |
| Mammal | Propithecus deckenii | Von der Decken’s sifaka | 30.9 g |
| Mammal | Propithecus diadema | Diademed sifaka / Diademed simpona / Simpona | 40.3 g |
| Mammal | Propithecus edwardsi | Milne-Edwards’s sifaka / Milne-Edwards’s simpona | 39.5 g |
| Mammal | Propithecus verreauxi | Verreaux’s sifaka / White sifaka | 26.3 g |
| Bird | Prosopeia personata | Masked shining parrot | 5.1 g |
| Bird | Prosopeia splendens | Crimson shining parrot / Kadavu musk parrot | 6.14 g |
| Bird | Prosopeia tabuensis | Maroon shining parrot / Red shining-parrot | 5.49 g |
| Mammal | Proteles cristatus | Aardwolf / Maanhaar jakkals / Termite-eating hyena / Civet hyena | 35.2 g |
| Fish | Proterorhinus marmoratus | Tubenose goby | 21.9 mg |
| Amphibian | Proteus anguinus | Olm / Proteus | 33.7 mg |
| Dinosaur | Protoceratops andrewsi | Protoceratops | 28 g |
| Bird | Protonotaria citrea | Prothonotary warbler | 611 mg |
| Insect | Protopolybia exigua | – | 0.109 mg |
| Fish | Protopterus annectens | West African lungfish / Tana lungfish / African lungfish | 224 mg |
| Mammal | Protoxerus stangeri | Forest giant squirrel / Stanger’s squirrel | 11.3 g |
| Bird | Prunella collaris | Alpine accentor | 970 mg |
| Bird | Prunella modularis | Dunnock / Hedge accentor / Hedge sparrow / Hedge warbler | 733 mg |
| Bird | Prunella montanella | Siberian accentor | 620 mg |
| Bird | Psalidoprocne pristoptera | Black saw-wing / Blue saw-wing / Black rough-winged swallow | 424 mg |
| Bird | Psaltriparus minimus | American bushtit / Bushtit | 361 mg |
| Reptile | Psammodromus algirus | Algerian psammodromus / Large psammodromus | 45 mg |
| Reptile | Psammodromus edwarsianus | East Iberian sand racer / East Iberian psammodromus | 25 mg |
| Reptile | Psammodromus hispanicus | Spanish psammodromus | 25 mg |
| Fish | Psammogobius biocellatus | Sleepy goby | 27.9 mg |
| Fish | Psammogobius knysnaensis | Knysna sandgoby | 20.9 mg |
| Mammal | Psammomys obesus | Fat sand rat | 1.3 g |
| Reptile | Psammophis elegans | Elegant sand racer | 138 mg |
| Bird | Psarocolius montezuma | Montezuma oropendola | 6.1 g |
| Bird | Psephotellus chrysopterygius | Golden-shouldered parrot / Alwal / Arrmorral / Minpin | 1.45 g |
| Bird | Psephotellus dissimilis | Hooded parrot | 1.8 g |
| Bird | Psephotellus varius | Mulga parrot / Many-coloured parrot | 1.85 g |
| Bird | Psephotus haematonotus | Red-rumped parrot / Red-backed parrot / Grass parrot | 2.02 g |
| Amphibian | Pseudacris triseriata | Western chorus frog / Striped chorus frog / Midland chorus frog | 2.27 mg |
| Mammal | Pseudantechinus bilarni | Sandstone false antechinus / Sandstone pseudantechinus / Sandstone antechinus / Sandstone dibbler | 662 mg |
| Mammal | Pseudantechinus macdonnellensis | Fat-tailed false antechinus / Fat-tailed pseudantechinus / Red-eared antechinus | 499 mg |
| Mammal | Pseudantechinus roryi | Rory Cooper’s false antechinus / Tan false antechinus / Tan pseudantechinus | 428 mg |
| Fish | Pseudanthias pascalus | – | 118 mg |
| Fish | Pseudanthias squamipinnis | Sea goldie / Orange basslet / Lyretail coralfish / Onestripe goldie | 82 mg |
| Fish | Pseudanthias taeniatus | – | 88 mg |
| Fish | Pseudanthias thompsoni | Hawaiian anthias / Thompsonʻs anthias | 170 mg |
| Bird | Pseudastur albicollis | White hawk | 8.18 g |
| Reptile | Pseudemoia entrecasteauxii | Entrecasteaux’s skink / Southern grass skink / Tussock cool-skink / Tussock skink | 23.9 mg |
| Bird | Pseudibis papillosa | Red-naped ibis / Indian black ibis / Black ibis | 9 g |
| Amphibian | Pseudis paradoxa | Paradoxical frog / Shrinking frog | 73.8 mg |
| Fish | Pseudobalistes fuscus | Blue triggerfish / Rippled triggerfish / Yellow-spotted triggerfish / Blue-and-gold triggerfish | 1.34 g |
| Fish | Pseudobatos productus | Shovelnose guitarfish | 8.88 g |
| Fish | Pseudocarcharias kamoharai | Crocodile shark | 3.54 g |
| Fish | Pseudocheilinus evanidus | Striated wrasse / Disappearing wrasse / Pinstripe wrasse / Scarlet wrasse | 41 mg |
| Fish | Pseudocheilinus hexataenia | Six-line wrasse | 44 mg |
| Fish | Pseudocheilinus tetrataenia | Four-lined wrasse | 35.8 mg |
| Mammal | Pseudocheirus occidentalis | Western ringtail possum / Ngwayir | 5.78 g |
| Mammal | Pseudocheirus peregrinus | Common ringtail possum | 5.05 g |
| Mammal | Pseudochirops albertisii | D’Albertis’ ringtail possum | 4.76 g |
| Mammal | Pseudochirops archeri | Green ringtail possum | 5.98 g |
| Mammal | Pseudochirops corinnae | Plush-coated ringtail possum / Golden ringtail possum | 5.46 g |
| Mammal | Pseudochirops coronatus | Reclusive ringtail possum / Monk ringtail possum | 5.22 g |
| Mammal | Pseudochirops cupreus | Coppery ringtail possum | 7.68 g |
| Mammal | Pseudochirulus canescens | Lowland ringtail possum | 1.83 g |
| Mammal | Pseudochirulus caroli | Weyland ringtail possum | 3.26 g |
| Mammal | Pseudochirulus forbesi | Painted ringtail possum / Moss-forest ringtail possum | 3.42 g |
| Mammal | Pseudochirulus herbertensis | Herbert River ringtail possum | 4.4 g |
| Mammal | Pseudochirulus mayeri | Pygmy ringtail possum | 2.05 g |
| Mammal | Pseudochirulus schlegeli | Vogelkop ringtail possum | 2.85 g |
| Fish | Pseudochromis dixurus | Fork-tail dottyback | 42 mg |
| Fish | Pseudochromis dutoiti | Dutoit’s dottyback | 26.2 mg |
| Fish | Pseudochromis olivaceus | Olive dottyback | 21 mg |
| Fish | Pseudochromis springeri | Blue-striped dottyback | 20.5 mg |
| Fish | Pseudochromis tapeinosoma | Blackmargin dottyback / Horseshoe-tailed dottyback | 21 mg |
| Bird | Pseudocolopteryx flaviventris | Warbling doradito | 351 mg |
| Fish | Pseudocoris yamashiroi | Redspot wrasse | 31.1 mg |
| Fish | Pseudogramma polyacantha | Palespot podge | 32 mg |
| Bird | Pseudoleistes virescens | Brown-and-yellow marshbird | 2.08 g |
| Mammal | Pseudomys australis | Plains rat / Palyoora / Plains mouse / Eastern mouse | 1.17 g |
| Mammal | Pseudomys hermannsburgensis | Sandy inland mouse / Hermannsburg false-mouse / Hermannsburg mouse | 1.08 g |
| Bird | Pseudopipra pipra | White-crowned manakin | 518 mg |
| Reptile | Pseudopus apodus | Sheltopusik / Scheltopusik / Pallas’s glass lizard / European legless lizard | 317 mg |
| Amphibian | Pseudorana weiningensis | Weining frog / Weining groove-toed frog | 20.1 mg |
| Mammal | Pseudorca crassidens | False killer whale | 3.85 kg |
| Bird | Pseudorectes ferrugineus | Rusty pitohui / Ferrugineous pitohui / Rusty shrike-thrush | 2.57 g |
| Fish | Pseudosimochromis babaulti | – | 105 mg |
| Fish | Pseudosimochromis curvifrons | – | 200 mg |
| Bird | Pseudotriccus pelzelni | Bronze-olive pygmy tyrant | 662 mg |
| Fish | Pseudupeneus maculatus | Spotted goatfish | 464 mg |
| Bird | Psilopogon asiaticus | Blue-throated barbet | 1.61 g |
| Bird | Psilopogon lineatus | Lineated barbet | 2.08 g |
| Bird | Psilopogon pyrolophus | Fire-tufted barbet | 2.21 g |
| Bird | Psilopogon virens | Great barbet | 2.2 g |
| Bird | Psilopogon zeylanicus | Brown-headed barbet | 1.97 g |
| Bird | Psilopsiagon aymara | Grey-hooded parakeet / Aymara parakeet / Sierra parakeet | 1.45 g |
| Bird | Psittacara chloropterus | Hispaniolan parakeet | 5.65 g |
| Bird | Psittacara finschi | Finsch’s parakeet / Crimson-fronted parakeet / Finsch’s conure | 5.47 g |
| Bird | Psittacara holochlorus | Green parakeet / Green conure / Mexican green conure | 5.42 g |
| Bird | Psittacara leucophthalmus | White-eyed parakeet / White-eyed conure | 5.78 g |
| Bird | Psittacella brehmii | Brehm’s tiger parrot / Brehm’s ground parrot | 3.16 g |
| Bird | Psittacella madaraszi | Madarasz’s tiger parrot | 2.07 g |
| Bird | Psittacella picta | Painted tiger parrot | 2.47 g |
| Bird | Psittacula alexandri | Red-breasted parakeet / Moustached parakeet | 3.98 g |
| Bird | Psittacula columboides | Blue-winged parakeet / Malabar parakeet | 3.55 g |
| Bird | Psittacula cyanocephala | Plum-headed parakeet | 2.54 g |
| Bird | Psittacula derbiana | Lord Derby’s parakeet / Derbyan parakeet | 6.32 g |
| Bird | Psittacula eupatria | Alexandrine parakeet / Alexandrine parrot | 4.92 g |
| Bird | Psittacula krameri | Rose-ringed parakeet / Ring-necked parakeet | 4.62 g |
| Bird | Psittacula longicauda | Long-tailed parakeet | 3.89 g |
| Bird | Psittacus erithacus | Grey parrot / Congo grey parrot | 9.26 g |
| Bird | Psitteuteles porphyrocephalus | Purple-crowned lorikeet / Porphyry-crowned lorikeet / Zit parrot / Blue-crowned lorikeet | 1.96 g |
| Bird | Psitteuteles pusillus | Little lorikeet | 1.65 g |
| Bird | Psitteuteles versicolor | Varied lorikeet | 2.07 g |
| Bird | Psittrichas fulgidus | Pesquet’s parrot / Dracula parrot / Vulturine parrot | 8.08 g |
| Bird | Psophia crepitans | Grey-winged trumpeter | 5.88 g |
| Bird | Psophia leucoptera | Pale-winged trumpeter / White-winged trumpeter | 5.2 g |
| Bird | Psophodes cristatus | Chirruping wedgebill | 1.45 g |
| Bird | Psophodes occidentalis | Chiming wedgebill / Chiming whipbird | 1.38 g |
| Bird | Psophodes olivaceus | Eastern whipbird | 2.26 g |
| Fish | Ptereleotris hanae | Blue gudgeon dartfish / Blue hana goby | 36.2 mg |
| Fish | Ptereleotris microlepis | Blue gudgeon / Green-eye dart-goby / Smallscale hovergoby / PPale dartfish | 39.5 mg |
| Bird | Pteridophora alberti | King of Saxony bird-of-paradise | 2.49 g |
| Bird | Pternistis leucoscepus | Yellow-necked spurfowl / Yellow-necked francolin | 3.26 g |
| Bird | Pternistis swainsonii | Swainson’s spurfowl / Swainson’s francolin | 3.8 g |
| Fish | Pterocaesio digramma | Double-lined fusilier / Double stripe fusilier / Blacktipped fusilier | 726 mg |
| Fish | Pterocaesio pisang | Banana fusilier / Ruddy fusilier | 728 mg |
| Fish | Pterocaesio tile | Dark-banded fusilier / Blue-streak fusilier / Bluedash fusilier / Neon fusilier | 608 mg |
| Bird | Pterocles bicinctus | Double-banded sandgrouse | 1.56 g |
| Bird | Pterocles decoratus | Black-faced sandgrouse | 1.36 g |
| Bird | Pterocles lichtensteinii | Lichtenstein’s sandgrouse | 1.17 g |
| Bird | Pterocles orientalis | Black-bellied sandgrouse | 2.4 g |
| Mammal | Pterodon dasyuroides | – | 62 g |
| Bird | Pterodroma hasitata | Black-capped petrel / Diablotín | 6 g |
| Bird | Pterodroma lessonii | White-headed petrel / White-headed fulmar | 6.08 g |
| Bird | Pterodroma leucoptera | Gould’s petrel / White-winged petrel | 2.57 g |
| Bird | Pterodroma macroptera | Great-winged petrel | 5.06 g |
| Bird | Pteroglossus aracari | Black-necked aracari / Black-necked araçari | 3.53 g |
| Bird | Pteroglossus bailloni | Saffron toucanet / Baillon’s toucan / Banana toucan / Saffron-colored araçari | 2.97 g |
| Bird | Pteroglossus castanotis | Chestnut-eared aracari / Chestnut-eared araçari | 3.91 g |
| Bird | Pteroglossus inscriptus | Lettered aracari / Lettered araçari | 2.59 g |
| Bird | Pteroglossus torquatus | Collared aracari / Collared araçari | 3.63 g |
| Fish | Pterogobius zacalles | – | 13.1 mg |
| Fish | Pterois volitans | Red lionfish | 38 mg |
| Mammal | Pteromys volans | Siberian flying squirrel | 1.92 g |
| Mammal | Pteromyscus pulverulentus | Smoky flying squirrel | 3.55 g |
| Bird | Pteronetta hartlaubii | Hartlaub’s duck | 5.94 g |
| Mammal | Pteronotus davyi | Davy’s naked-backed bat / Davy’s lesser naked-backed bat | 315 mg |
| Mammal | Pteronotus gymnonotus | Big naked-backed bat | 343 mg |
| Mammal | Pteronotus parnellii | Parnell’s mustached bat | 532 mg |
| Mammal | Pteronotus personatus | Wagner’s mustached bat | 234 mg |
| Mammal | Pteronura brasiliensis | Giant otter / Giant river otter | 85.6 g |
| Fish | Pteropterus antennatus | Spotfin lionfish / Banded lionfish / Broadbarred lionfish / Broadbarred firefish | 164 mg |
| Mammal | Pteropus alecto | Black flying fox / Black fruit bat | 7.04 g |
| Mammal | Pteropus conspicillatus | Spectacled flying fox / Spectacled fruit bat | 8.35 g |
| Mammal | Pteropus hypomelanus | Small flying fox / Island flying fox / Variable flying fox | 5.3 g |
| Mammal | Pteropus lylei | Lyle’s flying fox | 6.13 g |
| Mammal | Pteropus macrotis | Big-eared flying fox / Large-eared flying-fox | 6.13 g |
| Mammal | Pteropus mahaganus | Lesser flying fox / Sanborn’s flying fox | 5.28 g |
| Mammal | Pteropus medius | Indian flying fox / Greater Indian fruit bat | 7.45 g |
| Mammal | Pteropus melanotus | Black-eared flying fox / Blyth’s flying fox | 10.6 g |
| Mammal | Pteropus neohibernicus | Great flying fox / Greater flying fox / Bismarck flying fox | 9.11 g |
| Mammal | Pteropus poliocephalus | Grey-headed flying fox | 7.23 g |
| Mammal | Pteropus rufus | Madagascan flying fox / Madagascar flying-fox / Madagascar fruit bat | 7.3 g |
| Mammal | Pteropus samoensis | Samoa flying fox / Samoan flying fox | 5.79 g |
| Mammal | Pteropus scapulatus | Little red flying-fox | 5.36 g |
| Mammal | Pteropus temminckii | Temminck’s flying fox | 4.89 g |
| Mammal | Pteropus tonganus | Insular flying fox / Pacific flying fox | 6.08 g |
| Mammal | Pteropus vampyrus | Large flying fox / Greater flying fox / Malayan flying fox / Malaysian flying fox | 9.75 g |
| Bird | Pterorhinus lanceolatus | Chinese babax | 2.57 g |
| Bird | Pteruthius flaviscapis | Pied shrike-babbler | 1.55 g |
| Bird | Ptilinopus dupetithouarsii | White-capped fruit dove | 1.14 g |
| Bird | Ptilinopus hyogastrus | Grey-headed fruit dove / Gray-headed fruit dove | 1.66 g |
| Bird | Ptilinopus insularis | Henderson fruit dove / Henderson Island fruit dove / Scarlet-capped fruit dove | 1.11 g |
| Bird | Ptilinopus iozonus | Orange-bellied fruit dove | 1.5 g |
| Bird | Ptilinopus melanospilus | Black-naped fruit dove / Black-headed fruit dove | 1.35 g |
| Bird | Ptilinopus monacha | Blue-capped fruit dove | 943 mg |
| Bird | Ptilinopus ornatus | Ornate fruit dove | 1.76 g |
| Bird | Ptilinopus porphyraceus | Crimson-crowned fruit dove / Tongan fruit dove / Purple-capped fruit dove | 1.35 g |
| Bird | Ptilinopus pulchellus | Beautiful fruit dove / Rose-fronted pigeon / Crimson-capped fruit dove | 1.03 g |
| Bird | Ptilinopus purpuratus | Grey-green fruit dove | 1.03 g |
| Bird | Ptilinopus regina | Rose-crowned fruit dove / Pink-capped fruit dove / Swainson’s fruit dove | 1.25 g |
| Bird | Ptilinopus rivoli | White-bibbed fruit dove | 1.5 g |
| Bird | Ptilinopus superbus | Superb fruit dove / Purple-crowned fruit dove | 1.13 g |
| Mammal | Ptilodus montanus | – | 1 g |
| Bird | Ptilonorhynchus violaceus | Satin bowerbird | 3.88 g |
| Bird | Ptiloprora guisei | Rufous-backed honeyeater | 984 mg |
| Bird | Ptilopsis leucotis | Northern white-faced owl / White-faced scops-owl | 5.3 g |
| Bird | Ptiloris magnificus | Magnificent riflebird | 2.9 g |
| Bird | Ptiloris paradiseus | Paradise riflebird | 2.88 g |
| Bird | Ptiloris victoriae | Victoria’s riflebird / Lesser riflebird / Queen Victoria riflebird / Queen Victoria’s riflebird | 2.63 g |
| Bird | Ptilorrhoa caerulescens | Blue jewel-babbler | 1.14 g |
| Bird | Ptilostomus afer | Piapiac | 2.9 g |
| Bird | Ptilotula flavescens | Yellow-tinted honeyeater | 539 mg |
| Bird | Ptilotula fusca | Fuscous honeyeater | 756 mg |
| Bird | Ptilotula keartlandi | Grey-headed honeyeater | 712 mg |
| Bird | Ptilotula ornata | Yellow-plumed honeyeater | 779 mg |
| Bird | Ptilotula penicillata | White-plumed honeyeater | 860 mg |
| Bird | Ptilotula plumula | Grey-fronted honeyeater | 891 mg |
| Amphibian | Ptychadena mascareniensis | Mascarene grass frog / Mascarene ridged frog | 40 mg |
| Bird | Ptychoramphus aleuticus | Cassin’s auklet | 2.13 g |
| Bird | Pucrasia macrolopha | Koklass pheasant | 3.46 g |
| Mammal | Pudu puda | Southern pudu | 67.8 g |
| Bird | Puffinus gavia | Fluttering shearwater | 3.03 g |
| Bird | Pulsatrix perspicillata | Spectacled owl / Murucututu | 10.7 g |
| Mammal | Puma concolor | Cougar / Puma / Mountain lion / Catamount | 125 g |
| Fish | Pungitius pungitius | Ninespine stickleback / Ten-spined stickleback | 9.75 mg |
| Bird | Purnella albifrons | White-fronted honeyeater | 748 mg |
| Bird | Purpureicephalus spurius | Red-capped parrot | 3.62 g |
| Mammal | Pusa caspica | Caspian seal | 163 g |
| Mammal | Pusa hispida | Ringed seal | 214 g |
| Mammal | Pusa sibirica | Baikal seal / Lake Baikal seal / Nerpa | 188 g |
| Fish | Pycnochromis amboinensis | Ambon chromis | 79 mg |
| Fish | Pycnochromis atripes | Dark-fin chromis | 47 mg |
| Fish | Pycnochromis dimidiatus | Chocolatedip chromis / Red Sea half-and-half chromis | 52 mg |
| Fish | Pycnochromis hanui | Chocolate-dip chromis | 82 mg |
| Fish | Pycnochromis iomelas | Half and half chromis | 52 mg |
| Fish | Pycnochromis leucurus | Whitetail chromis | 87 mg |
| Fish | Pycnochromis nigrurus | Blacktail chromis | 41 mg |
| Fish | Pycnochromis retrofasciatus | Black-bar chromis | 33 mg |
| Bird | Pycnonotus barbatus | Common bulbul | 1.19 g |
| Bird | Pycnonotus jocosus | Red-whiskered bulbul / Crested bulbul | 962 mg |
| Bird | Pycnoptilus floccosus | Pilotbird | 1.22 g |
| Mammal | Pygathrix nemaeus | Red-shanked douc | 81.8 g |
| Mammal | Pygathrix nigripes | Black-shanked douc | 82.7 g |
| Fish | Pygocentrus nattereri | Red-bellied piranha / Red piranha | 58 mg |
| Bird | Pygochelidon cyanoleuca | Blue-and-white swallow | 448 mg |
| Fish | Pygoplites diacanthus | Royal angelfish / Regal angelfish | 370 mg |
| Reptile | Pygopus nigriceps | Hooded scaly-foot / Western scaly-foot / Black-headed scaly-foot / Western hooded scaly-foot | 29.1 mg |
| Bird | Pygoscelis adeliae | Adélie penguin | 18.9 g |
| Bird | Pygoscelis papua | Gentoo penguin | 18.5 g |
| Bird | Pyrenestes sanguineus | Crimson seedcracker | 970 mg |
| Bird | Pyriglena leuconota | East Amazonian fire-eye | 962 mg |
| Bird | Pyrilia barrabandi | Orange-cheeked parrot / Barraband’s parrot | 4.14 g |
| Bird | Pyrilia caica | Caica parrot | 3.47 g |
| Bird | Pyrilia haematotis | Brown-hooded parrot | 4.07 g |
| Bird | Pyrocephalus rubinus | Scarlet flycatcher / Austral vermilion flycatcher | 478 mg |
| Bird | Pyroderus scutatus | Red-ruffed fruitcrow | 4.45 g |
| Bird | Pyrope pyrope | Fire-eyed diucon | 1.33 g |
| Bird | Pyrrhocorax graculus | Alpine chough / Yellow-billed chough | 3.35 g |
| Bird | Pyrrhocorax pyrrhocorax | Red-billed chough / Cornish chough / Chough | 6.3 g |
| Bird | Pyrrholaemus brunneus | Redthroat | 591 mg |
| Bird | Pyrrholaemus sagittatus | Speckled warbler | 622 mg |
| Bird | Pyrrhula pyrrhula | Eurasian bullfinch / Common bullfinch | 907 mg |
| Bird | Pyrrhura frontalis | Maroon-bellied parakeet / Reddish-bellied parakeet / Maroon-bellied conure / Reddish-bellied conure | 2.91 g |
| Bird | Pyrrhura hoffmanni | Sulphur-winged parakeet / Hoffmann’s conure | 3.63 g |
| Bird | Pyrrhura lepida | Pearly parakeet / Pearly conure | 3 g |
| Bird | Pyrrhura melanura | Maroon-tailed parakeet | 3.4 g |
| Bird | Pyrrhura perlata | Crimson-bellied parakeet / Crimson-bellied conure | 3 g |
| Bird | Pyrrhura picta | Painted parakeet / Painted conure | 2.54 g |
| Reptile | Python bivittatus | Burmese python | 1.12 g |
| Reptile | Python molurus | Indian python / Black-tailed python / Indian rock python / Asian rock python | 1.12 g |
| Reptile | Python regius | Ball python / Royal python | 405 mg |
| Bird | Pytilia melba | Green-winged pytilia | 590 mg |
| Bird | Pytilia phoenicoptera | Red-winged pytilia | 370 mg |
| Amphibian | Quasipaa boulengeri | Boulenger’s spiny frog / Spiny-bellied frog / Boulenger’s paa frog | 76.4 mg |
| Bird | Querula purpurata | Purple-throated fruitcrow | 2.21 g |
| Bird | Quiscalus major | Boat-tailed grackle | 3.02 g |
| Bird | Quiscalus mexicanus | Great-tailed grackle / Mexican grackle | 3.07 g |
| Bird | Quiscalus quiscula | Common grackle | 2.8 g |
| Bird | Radjah radjah | Radjah shelduck / Raja shelduck / Black-backed shelduck / Burdekin duck | 5.35 g |
| Fish | Raja asterias | Mediterranean starry ray | 3.03 g |
| Fish | Raja brachyura | Blonde ray / Blonde skate | 4.53 g |
| Fish | Raja clavata | Thornback ray / Thornback skate | 6.03 g |
| Fish | Raja microocellata | Smalleyed ray / Smalleyed skate | 2.22 g |
| Fish | Raja undulata | Undulate ray | 6.09 g |
| Fish | Rajella fyllae | Round ray / Round skate / Fylla’s ray | 1.46 g |
| Bird | Rallina eurizonoides | Slaty-legged crake / Banded crake | 1.77 g |
| Bird | Rallus aquaticus | Water rail / Western water rail / European water rail | 1.75 g |
| Bird | Rallus longirostris | Mangrove rail | 2.48 g |
| Bird | Ramphastos dicolorus | Red-breasted toucan / Green-billed toucan | 4.69 g |
| Bird | Ramphastos sulfuratus | Keel-billed toucan / Rainbow-billed toucan / Sulphur-breasted toucan | 5.03 g |
| Bird | Ramphastos toco | Toco toucan | 6.39 g |
| Bird | Ramphastos tucanus | White-throated toucan | 6.2 g |
| Bird | Ramphastos vitellinus | Channel-billed toucan | 4.84 g |
| Bird | Ramphiculus jambu | Jambu fruit dove | 1.35 g |
| Bird | Ramphiculus leclancheri | Black-chinned fruit dove / Black-throated fruit dove / Leclancher’s dove | 1.61 g |
| Bird | Ramphiculus occipitalis | Yellow-breasted fruit dove / Balorinay | 2.02 g |
| Bird | Ramphocaenus melanurus | Trilling gnatwren / Long-billed gnatwren | 529 mg |
| Bird | Ramphocelus carbo | Silver-beaked tanager | 1.17 g |
| Bird | Ramphocelus flammigerus | Flame-rumped tanager | 1.23 g |
| Bird | Ramsayornis modestus | Brown-backed honeyeater | 529 mg |
| Amphibian | Rana chaochiaoensis | Chaochiao frog | 50.8 mg |
| Amphibian | Rana chensinensis | Asiatic grass frog / Chinese brown frog | 31.3 mg |
| Amphibian | Rana hanluica | – | 47.2 mg |
| Amphibian | Rana japonica | Japanese brown frog | 43.8 mg |
| Amphibian | Rana kukunoris | Plateau brown frog / Plateau wood frog | 41.7 mg |
| Amphibian | Rana omeimontis | Omei brown frog / Omei wood frog | 63.8 mg |
| Amphibian | Rana temporaria | Common frog / Grass frog / European brown frog / European Holarctic true frog | 65.4 mg |
| Mammal | Rangifer tarandus | Reindeer / Caribou | 290 g |
| Mammal | Raphicerus campestris | Steenbok / Steinbuck / Steinbok | 50.8 g |
| Mammal | Raphicerus melanotis | Cape grysbok / Southern grysbok | 55 g |
| Fish | Rastrelliger kanagurta | Indian mackerel / Bigmouth mackerel | 612 mg |
| Mammal | Rattus exulans | Polynesian rat / Pacific rat / Little rat / Kiore | 890 mg |
| Mammal | Rattus fuscipes | Bush rat / Australian bush rat | 1.68 g |
| Mammal | Rattus lutreolus | Australian swamp rat / Eastern swamp rat | 1.63 g |
| Mammal | Rattus morotaiensis | Moluccan prehensile-tailed rat | 1.92 g |
| Mammal | Rattus niobe | Moss-forest rat | 1.1 g |
| Mammal | Rattus nitidus | Himalayan field rat / White-footed Indo-Chinese rat | 1.7 g |
| Mammal | Rattus norvegicus | – | 4.73 g |
| Mammal | Rattus rattus | Black rat / Roof rat / Ship rat / House rat | 1.34 g |
| Mammal | Rattus sordidus | Dusky field rat / Canefield rat | 1.7 g |
| Mammal | Rattus tunneyi | Pale field rat / Tunney’s rat / Australian pale field rat | 1.41 g |
| Mammal | Rattus verecundus | Slender rat | 1.48 g |
| Mammal | Ratufa affinis | Cream-coloured giant squirrel / Pale giant squirrel | 9.85 g |
| Mammal | Ratufa bicolor | Black giant squirrel / Malayan giant squirrel | 11 g |
| Mammal | Ratufa indica | Indian giant squirrel / Malabar giant squirrel | 11.5 g |
| Bird | Recurvirostra americana | American avocet | 2.18 g |
| Bird | Recurvirostra avosetta | Pied avocet | 1.95 g |
| Bird | Recurvirostra novaehollandiae | Red-necked avocet / Australian avocet / Cobbler / Cobbler’s awl | 2.07 g |
| Fish | Redigobius bikolanus | Speckled goby / Bigmouth goby | 7.37 mg |
| Fish | Redigobius dewaali | Checked goby | 9.32 mg |
| Fish | Redigobius macrostoma | Large-mouth goby | 6.04 mg |
| Mammal | Redunca arundinum | Southern reedbuck / Common reedbuck / Rietbok | 137 g |
| Mammal | Redunca fulvorufula | Mountain reedbuck | 109 g |
| Mammal | Redunca redunca | Bohor reedbuck | 123 g |
| Fish | Reganochromis calliurus | – | 84.3 mg |
| Bird | Regulus regulus | Goldcrest | 358 mg |
| Bird | Regulus satrapa | Golden-crowned kinglet | 373 mg |
| Bird | Reinwardtoena browni | Pied cuckoo-dove | 2.18 g |
| Bird | Reinwardtoena reinwardti | Great cuckoo-dove | 2.07 g |
| Mammal | Reithrodontomys megalotis | Western harvest mouse | 400 mg |
| Bird | Remiz pendulinus | Eurasian penduline tit / European penduline tit | 450 mg |
| Fish | Rexea prometheoides | Royal escolar | 328 mg |
| Fish | Rhabdoblennius snowi | Snow’s rockskipper / Snow blenny | 14.6 mg |
| Mammal | Rhabdomys pumilio | Four-striped grass mouse / Four-striped grass rat | 693 mg |
| Fish | Rhabdosargus sarba | Goldlined seabream / Silver bream / Tarwhine / Yellowfin bream | 281 mg |
| Bird | Rhabdotorrhinus leucocephalus | Writhed hornbill / Mindanao wrinkled hornbill | 13.3 g |
| Amphibian | Rhacophorus rhodopus | – | 58.8 mg |
| Bird | Rhagologus leucostigma | Mottled berryhunter / Mottled whistler | 1.08 g |
| Bird | Rhea americana | Greater rhea / Common rhea / Grey rhea / American rhea | 20.8 g |
| Bird | Rhea pennata | Darwin’s rhea / Lesser rhea | 19.2 g |
| Fish | Rhincodon typus | Whale shark | 35.8 g |
| Fish | Rhinecanthus aculeatus | Lagoon triggerfish / Blackbar triggerfish / Picasso triggerfish / Picassofish | 413 mg |
| Fish | Rhinecanthus rectangulus | Reef triggerfish / Rectangular triggerfish / Wedgetail triggerfish / Humuhumu | 562 mg |
| Amphibian | Rhinella marina | Cane toad / Giant neotropical toad / Marine toad | 243 mg |
| Amphibian | Rhinella roqueana | – | 36.3 mg |
| Amphibian | Rhinella spinulosa | Warty toad / Huanuco toad | 132 mg |
| Mammal | Rhinoceros unicornis | Indian rhinoceros / Greater one-horned rhinoceros / Great Indian rhinoceros / Indian rhino | 786 g |
| Fish | Rhinochimaera pacifica | Pacific spookfish / Knifenose chimaera / Narrownose chimaera / Pacific long-nosed chimaera | 2.25 g |
| Reptile | Rhinoclemmys pulcherrima | Ornate / Painted wood turtle | 267 mg |
| Bird | Rhinocrypta lanceolata | Crested gallito | 1.45 g |
| Fish | Rhinogobius flumineus | Lizard goby / Kawa-yoshinobori | 15.1 mg |
| Fish | Rhinogobius giurinus | – | 15.6 mg |
| Mammal | Rhinolophus acuminatus | Acuminate horseshoe bat | 302 mg |
| Mammal | Rhinolophus affinis | Intermediate horseshoe bat | 348 mg |
| Mammal | Rhinolophus capensis | Cape horseshoe bat | 256 mg |
| Mammal | Rhinolophus clivosus | Geoffroy’s horseshoe bat | 242 mg |
| Mammal | Rhinolophus coelophyllus | Croslet horseshoe bat | 259 mg |
| Mammal | Rhinolophus cornutus | Little Japanese horseshoe bat | 194 mg |
| Mammal | Rhinolophus eloquens | Eloquent horseshoe bat | 405 mg |
| Mammal | Rhinolophus ferrumequinum | Greater horseshoe bat | 350 mg |
| Mammal | Rhinolophus hildebrandtii | Hildebrandt’s horseshoe bat | 630 mg |
| Mammal | Rhinolophus hipposideros | Lesser horseshoe bat | 213 mg |
| Mammal | Rhinolophus landeri | Lander’s horseshoe bat | 276 mg |
| Mammal | Rhinolophus lepidus | Blyth’s horseshoe bat | 188 mg |
| Mammal | Rhinolophus luctus | Great woolly horseshoe bat | 591 mg |
| Mammal | Rhinolophus macrotis | Big-eared horseshoe bat | 208 mg |
| Mammal | Rhinolophus malayanus | Malayan horseshoe bat | 202 mg |
| Mammal | Rhinolophus megaphyllus | Smaller horseshoe bat / Eastern horseshoe bat | 261 mg |
| Mammal | Rhinolophus mehelyi | Mehely’s horseshoe bat | 310 mg |
| Mammal | Rhinolophus paradoxolophus | Bourret’s horseshoe bat | 267 mg |
| Mammal | Rhinolophus pearsonii | Pearson’s horseshoe bat | 332 mg |
| Mammal | Rhinolophus pusillus | Least horseshoe bat | 164 mg |
| Mammal | Rhinolophus robinsoni | Peninsular horseshoe bat / Robinson’s Horseshoe Bat | 279 mg |
| Mammal | Rhinolophus stheno | Lesser brown horseshoe bat | 285 mg |
| Mammal | Rhinolophus thomasi | Thomas’s horseshoe bat | 233 mg |
| Mammal | Rhinolophus trifoliatus | Trefoil horseshoe bat | 351 mg |
| Mammal | Rhinolophus yunanensis | Dobson’s horseshoe bat | 439 mg |
| Mammal | Rhinonicteris aurantia | Orange leaf-nosed bat | 249 mg |
| Amphibian | Rhinophrynus dorsalis | Mexican burrowing toad | 32.7 mg |
| Mammal | Rhinophylla pumilio | Dwarf little fruit bat | 356 mg |
| Mammal | Rhinopithecus roxellana | Golden snub-nosed monkey / Sichuan golden hair monkey / Sichuan snub-nosed monkey | 118 g |
| Bird | Rhinoplax vigil | Helmeted hornbill | 20.7 g |
| Mammal | Rhinopoma hardwickii | Lesser mouse-tailed bat / Hardwicke’s lesser mouse-tailed bat / Long-tailed bat | 275 mg |
| Mammal | Rhinopoma microphyllum | Greater mouse-tailed bat | 404 mg |
| Bird | Rhinopomastus cyanomelas | Common scimitarbill | 1.09 g |
| Bird | Rhinopomastus minor | Abyssinian scimitarbill | 1.02 g |
| Bird | Rhinoptilus chalcopterus | Bronze-winged courser / Violet-tipped courser | 1.5 g |
| Bird | Rhinortha chlorophaea | Raffles’s malkoha | 1.32 g |
| Mammal | Rhinosciurus laticaudatus | Shrew-faced squirrel / Long-nosed squirrel | 4.28 g |
| Bird | Rhipidura albiscapa | Grey fantail | 352 mg |
| Bird | Rhipidura atra | Black fantail | 591 mg |
| Bird | Rhipidura fuliginosa | New Zealand fantail | 352 mg |
| Bird | Rhipidura leucophrys | Willie wagtail / Spelt willy wagtail | 600 mg |
| Bird | Rhipidura rufifrons | Australian rufous fantail | 371 mg |
| Bird | Rhipidura rufiventris | Northern fantail | 570 mg |
| Fish | Rhizoprionodon acutus | Milk shark | 13.2 g |
| Fish | Rhizoprionodon porosus | Caribbean sharpnose shark | 7.18 g |
| Fish | Rhizoprionodon taylori | Australian sharpnose shark | 3.65 g |
| Insect | Rhodanthidium sticticum | Spotted red-resin bee | 2.52 mg |
| Bird | Rhodinocichla rosea | Rosy thrush-tanager / Rose-breasted thrush-tanager | 1.4 g |
| Bird | Rhodonessa caryophyllacea | Pink-headed duck | 5 g |
| Bird | Rhodospingus cruentus | Crimson-breasted finch | 539 mg |
| Bird | Rhodostethia rosea | Ross’s gull / Ross’s seagull | 2.23 g |
| Mammal | Rhogeessa parvula | Little yellow bat | 111 mg |
| Mammal | Rhogeessa tumida | Black-winged little yellow bat | 106 mg |
| Fish | Rhomboplites aurorubens | Vermilion snapper / Clubhead snapper / Night snapper / Beeliner | 650 mg |
| Fish | Rhyacichthys aspro | Loach goby | 168 mg |
| Amphibian | Rhyaconastes lesueuri | Lesueur’s frog | 27.4 mg |
| Amphibian | Rhyacotriton olympicus | Olympic torrent salamander | 12 mg |
| Mammal | Rhynchocyon cirnei | Chequered sengi / Checkered sengi / Checkered elephant shrew | 5.74 g |
| Mammal | Rhynchocyon petersi | Black and rufous sengi / Black and rufous elephant shrew / Zanj elephant shrew | 5.4 g |
| Mammal | Rhynchocyon stuhlmanni | Stuhlmann’s sengi / White-tailed sengi | 6.1 g |
| Mammal | Rhynchogale melleri | Meller’s mongoose | 17 g |
| Mammal | Rhyncholestes raphanurus | Long-nosed caenolestid / Chilean shrew opossum / Long-nosed shrew opossum | 662 mg |
| Mammal | Rhynchomeles prattorum | Seram bandicoot / Seram Island long-nosed bandicoot | 4.99 g |
| Mammal | Rhynchonycteris naso | Proboscis bat / Long-nosed proboscis bat / Sharp-nosed bat / Brazilian long-nosed bat | 110 mg |
| Bird | Rhynchopsitta pachyrhyncha | Thick-billed parrot | 11.6 g |
| Bird | Rhynchotus rufescens | Red-winged tinamou / Rufous tinamou | 3.79 g |
| Bird | Rhynochetos jubatus | Kagu / Cagou | 6.94 g |
| Bird | Rhyticeros cassidix | Knobbed hornbill / Sulawesi wrinkled hornbill | 18.8 g |
| Bird | Rhyticeros plicatus | Blyth’s hornbill / Papuan hornbill | 17.2 g |
| Bird | Rhyticeros undulatus | Wreathed hornbill / Bar-pouched wreathed hornbill | 18.7 g |
| Bird | Riccordia ricordii | Cuban emerald | 135 mg |
| Reptile | Rieppeleon brevicaudatus | Bearded leaf chameleon / Bearded pygmy chameleon | 21 mg |
| Bird | Riparia riparia | Common sand martin / Collared sand martin / Bank swallow | 396 mg |
| Bird | Rissa brevirostris | Red-legged kittiwake | 4.22 g |
| Bird | Rissa tridactyla | Black-legged kittiwake / Kittiwake | 4.06 g |
| Amphibian | Rohanixalus vittatus | Two-striped pigmy tree frog / Bhamo tree frog / Boulenger’s tree frog / Striped Asian treefrog | 10.1 mg |
| Bird | Rollandia rolland | White-tufted grebe / Rolland’s grebe | 2.05 g |
| Bird | Rollulus rouloul | Crested partridge / Crested wood partridge / Roul-roul / Red-crowned wood partridge | 1.91 g |
| Bird | Rostratula australis | Australian painted-snipe | 1.47 g |
| Bird | Rostratula benghalensis | Greater painted-snipe | 1.44 g |
| Bird | Rostrhamus sociabilis | Snail kite | 5.27 g |
| Fish | Rostroraja eglanteria | Clearnose skate / Brier skate / Summer skate | 1.64 g |
| Mammal | Rousettus aegyptiacus | Egyptian fruit bat / Egyptian rousette | 2.27 g |
| Mammal | Rousettus amplexicaudatus | Geoffroy’s rousette | 1.63 g |
| Mammal | Rubrisciurus rubriventer | Red-bellied squirrel / Sulawesi giant squirrel | 6.7 g |
| Mammal | Rupicapra rupicapra | Chamois / Alpine chamois | 130 g |
| Bird | Rupicola peruvianus | Andean cock-of-the-rock / Tunki | 3.48 g |
| Bird | Rupornis magnirostris | Roadside hawk | 4.72 g |
| Mammal | Rusa timorensis | Javan rusa / Sunda sambar | 205 g |
| Mammal | Rusa unicolor | Sambar | 383 g |
| Bird | Rynchops niger | Black skimmer | 2.37 g |
| Mammal | Saccolaimus saccolaimus | Naked-rumped pouched bat / Pouched tomb bat | 671 mg |
| Mammal | Saccopteryx bilineata | Greater sac-winged bat | 223 mg |
| Mammal | Saccopteryx canescens | Frosted sac-winged bat | 130 mg |
| Mammal | Saccopteryx leptura | Lesser sac-winged bat / Lesser white-lined bat | 161 mg |
| Mammal | Saccostomus campestris | South African pouched mouse / Southern African pouched mouse | 815 mg |
| Bird | Sagittarius serpentarius | Secretarybird / Secretary bird | 15.3 g |
| Mammal | Saguinus bicolor | Pied tamarin / Brazilian bare-faced tamarin | 9.55 g |
| Mammal | Saguinus geoffroyi | Geoffroy’s tamarin / Panamanian / Red-crested / Rufous-naped tamarin | 16.1 g |
| Mammal | Saguinus labiatus | White-lipped tamarin / Red-bellied tamarin | 10.2 g |
| Mammal | Saguinus leucopus | White-footed tamarin | 9.88 g |
| Mammal | Saguinus midas | Golden-handed tamarin / Red-handed tamarin / Midas tamarin | 10 g |
| Mammal | Saguinus mystax | Moustached tamarin | 10.8 g |
| Mammal | Saguinus niger | Black tamarin / Western black-handed tamarin | 8.94 g |
| Mammal | Saguinus oedipus | Cotton-top tamarin | 9.64 g |
| Mammal | Saguinus ursulus | Eastern black-handed tamarin | 8.4 g |
| Mammal | Saiga tatarica | Saiga antelope / Saiga | 119 g |
| Mammal | Saimiri boliviensis | Black-capped squirrel monkey | 24.6 g |
| Mammal | Saimiri oerstedii | Central American squirrel monkey / Red-backed squirrel monkey | 24.1 g |
| Mammal | Saimiri sciureus | Guianan squirrel monkey | 23.5 g |
| Bird | Sakesphorus luctuosus | Glossy antshrike | 1.19 g |
| Amphibian | Salamandra atra | Alpine salamander | 27.3 mg |
| Amphibian | Salamandra infraimmaculata | Near Eastern fire salamander / Turkish salamander | 47 mg |
| Amphibian | Salamandra salamandra | Fire salamander | 36.7 mg |
| Mammal | Salanoia concolor | Brown-tailed mongoose / Brown-tailed vontsira / Malagasy brown-tailed mongoose / Salano | 11 g |
| Fish | Salarias fasciatus | Jewelled blenny / Lawnmower blenny | 56 mg |
| Fish | Salmo salar | Atlantic salmon | 1.07 g |
| Fish | Salmo trutta | Brown trout | 570 mg |
| Bird | Salpinctes obsoletus | Rock wren | 777 mg |
| Bird | Saltator maximus | Buff-throated saltator | 1.44 g |
| Reptile | Saltuarius cornutus | Northern leaf-tailed gecko | 135 mg |
| Reptile | Salvator merianae | Argentine black and white tegu / Argentine giant tegu / Black and white tegu / Blue tegu | 1.11 g |
| Fish | Salvelinus fontinalis | Brook trout / Eastern brook trout / Speckled trout / Brook char | 634 mg |
| Fish | Salvelinus namaycush | Lake trout / Mackinaw / Namaycush / Lake char | 1.33 g |
| Mammal | Sapajus apella | Tufted capuchin / Brown capuchin / Black-capped capuchin / Pin monkey | 70.4 g |
| Mammal | Sapajus libidinosus | Black-striped capuchin / Bearded capuchin | 73 g |
| Mammal | Sapajus nigritus | Black capuchin / Black-horned capuchin | 67.1 g |
| Mammal | Sapajus xanthosternos | Golden-bellied capuchin / Yellow-breasted / Buff-headed capuchin | 66.1 g |
| Bird | Sappho sparganurus | Red-tailed comet | 249 mg |
| Reptile | Saproscincus challengeri | Border Ranges shadeskink / Challenger’s skink / Challenging shade skink / Orange-tailed shadeskink | 18.7 mg |
| Mammal | Sarcophilus harrisii | Tasmanian devil | 16.4 g |
| Bird | Sarcops calvus | Coleto | 2.9 g |
| Bird | Sarcoramphus papa | King vulture | 20 g |
| Fish | Sardina pilchardus | European pilchard | 354 mg |
| Fish | Sardinops sagax | Pacific sardine | 195 mg |
| Fish | Sargocentron caudimaculatum | Silverspot squirrelfish / Whitetail squirrelfish | 548 mg |
| Fish | Sargocentron diadema | Crowned squirrelfish | 326 mg |
| Fish | Sargocentron microstoma | Fine-lined squirrelfish / Slender squirrelfish / Smallmouth squirrelfish | 323 mg |
| Fish | Sargocentron punctatissimum | Squirrelfish | 363 mg |
| Fish | Sargocentron rubrum | Redcoat | 287 mg |
| Fish | Sargocentron spiniferum | Sabre squirrelfish / Giant squirrelfish / Spiny squirrelfish | 734 mg |
| Fish | Sargocentron tiere | Blue lined squirrelfish | 535 mg |
| Fish | Sargocentron xantherythrum | Hawaiian squirrelfish / Striped squirrelfish | 252 mg |
| Bird | Sarkidiornis melanotos | Knob-billed duck / African comb duck | 7.24 g |
| Bird | Sasia abnormis | Rufous piculet | 601 mg |
| Fish | Saurida gracilis | Gracile lizardfish | 117 mg |
| Fish | Saurida undosquamis | Brushtooth lizardfish / Large-scale grinner / Largescale saury | 71 mg |
| Bird | Saxicola rubetra | Whinchat | 625 mg |
| Bird | Saxicola torquatus | African stonechat / Common stonechat | 631 mg |
| Bird | Sayornis nigricans | Black phoebe | 509 mg |
| Bird | Sayornis phoebe | Eastern phoebe | 711 mg |
| Bird | Sayornis saya | Say’s phoebe | 631 mg |
| Mammal | Scalopus aquaticus | Eastern mole / Common mole | 1.08 g |
| Mammal | Scapanus townsendii | Townsend’s mole | 2.02 g |
| Amphibian | Scaphiophryne madagascariensis | Madagascar rain frog / Green rain frog | 53.3 mg |
| Fish | Scaphirhynchus platorynchus | Shovelnose sturgeon / Hackleback / Sand sturgeon / Switchtail | 241 mg |
| Fish | Scartelaos histophorus | Walking goby | 82.8 mg |
| Fish | Scarus dubius | Regal parrotfish | 571 mg |
| Fish | Scarus ferrugineus | Rusty parrotfish | 672 mg |
| Fish | Scarus frenatus | Bridled parrotfish / Sixband / Six-banded parrotfish / Vermiculate parrotfish | 455 mg |
| Fish | Scarus ghobban | Blue-barred parrotfish / Blue trim parrotfish / Cream parrotfish / Globe-headed parrotfish | 846 mg |
| Fish | Scarus globiceps | Globehead parrotfish / Violet-lined parrotfish / Speckled parrotfish / Roundhead parrotfish | 799 mg |
| Fish | Scarus niger | Swarthy parrotfish / Dusky parrotfish / Black parrotfish | 533 mg |
| Fish | Scarus oviceps | Dark-capped parrotfish / Blue parrotfish / Egghead parrotfish / Yellow-barred parrotfish | 398 mg |
| Fish | Scarus prasiognathos | Singapore parrotfish | 686 mg |
| Fish | Scarus psittacus | Common parrotfish / Palenose parrotfish / Batavian parrotfish / Rosy-cheek parrotfish | 609 mg |
| Fish | Scarus rivulatus | Rivulated parrotfish | 368 mg |
| Fish | Scarus rubroviolaceus | Ember parrotfish / Bicolor parrotfish / Redlip parrotfish | 838 mg |
| Fish | Scarus taeniopterus | Princess parrotfish | 179 mg |
| Fish | Scatophagus argus | Spotted scat / Butterfish / Mia mia / Spotted butterfish | 293 mg |
| Insect | Sceliphron caementarium | Yellow-legged mud-dauber wasp / Black-and-yellow mud dauber / Black-waisted mud-dauber | 3.88 mg |
| Reptile | Sceloporus malachiticus | Emerald swift / Green spiny lizard | 106 mg |
| Reptile | Sceloporus occidentalis | Western fence lizard / Blue-belly | 74.2 mg |
| Reptile | Sceloporus olivaceus | Texas spiny lizard | 71.8 mg |
| Bird | Scenopoeetes dentirostris | Tooth-billed bowerbird / Stagemaker bowerbird / Tooth-billed catbird | 2.83 g |
| Fish | Schedophilus medusophagus | Cornish blackfish | 385 mg |
| Bird | Schiffornis turdina | Brown-winged schiffornis / Brown-winged mourner | 1.11 g |
| Insect | Schistocerca gregaria | Desert locust | 0.721 mg |
| Bird | Schistochlamys melanopis | Black-faced tanager | 1.26 g |
| Bird | Schistolais leucopogon | White-chinned prinia / White-chinned warbler | 611 mg |
| Amphibian | Scinax ruber | Red snouted treefrog / Red-snouted treefrog / Allen’s snouted treefrog | 34 mg |
| Reptile | Scincella lateralis | Little brown skink / Ground skink | 9.82 mg |
| Reptile | Scincus scincus | Common sandfish / Common skink / Sandfish skink | 103 mg |
| Bird | Scissirostrum dubium | Grosbeak starling / Grosbeak myna / Finch-billed myna / Scissor-billed starling | 1.35 g |
| Mammal | Sciurocheirus alleni | Bioko Allen’s bushbaby / Bioko squirrel galago | 5.84 g |
| Mammal | Sciurocheirus gabonensis | Gabon bushbaby | 5.36 g |
| Mammal | Sciurus aberti | Abert’s squirrel / Tassel-eared squirrel | 6.85 g |
| Mammal | Sciurus aureogaster | Mexican gray squirrel / Red-bellied squirrel | 7.81 g |
| Mammal | Sciurus carolinensis | Eastern gray squirrel / Grey squirrel | 7.24 g |
| Mammal | Sciurus granatensis | Red-tailed squirrel | 5.91 g |
| Mammal | Sciurus niger | Fox squirrel / Eastern fox squirrel / Bryant’s fox squirrel | 7.96 g |
| Mammal | Sciurus vulgaris | Red squirrel / Eurasian red squirrel | 5.93 g |
| Fish | Scleropages formosus | Asian arowana / Asian bonytongue / Dragonfish | 266 mg |
| Fish | Scleropages jardinii | Gulf saratoga / Australian bonytongue / Pearl arowana / Northern saratoga | 271 mg |
| Amphibian | Sclerophrys arabica | Arabian toad | 140 mg |
| Amphibian | Sclerophrys regularis | African common toad / Square-marked toad / African toad / Egyptian toad | 117 mg |
| Bird | Scleroptila gutturalis | Orange River francolin | 2.7 g |
| Bird | Scleroptila levaillantii | Red-winged francolin | 2.5 g |
| Bird | Sclerurus mexicanus | Tawny-throated leaftosser / Middle American leaftosser / Tawny-throated leafscraper / Mexican leaftosser | 819 mg |
| Fish | Scoliodon laticaudus | Spadenose shark / Indian dogfish / Sharp-nosed shark / Trowel-nose shark | 2.04 g |
| Bird | Scolopax minor | American woodcock / Timberdoodle / Mudbat / Becasse | 1.7 g |
| Bird | Scolopax rusticola | Eurasian woodcock | 2.59 g |
| Fish | Scolopsis bilineata | Two-lined monocle bream / Bridled monocle bream / Bridled spinecheek / Double-lined coral bream | 457 mg |
| Fish | Scolopsis ciliata | Saw-jawed monocle bream / Ciliate spinecheek / Silver-line spinecheek / Whitestreak monocle bream | 251 mg |
| Fish | Scolopsis frenata | Bridled monocle bream | 325 mg |
| Fish | Scolopsis vosmeri | Vosmaer’s monocle bream / White-banded monocle bream / Whitecheek monoclebream / Whiteband spinecheek | 156 mg |
| Fish | Scomber scombrus | Atlantic mackerel / Boston mackerel / Norwegian mackerel / Scottish mackerel | 1.29 g |
| Fish | Scomberoides tol | Needlescaled queenfish / Slender queenfish / Needleskin queenfish / Slender leatherskin | 1.25 g |
| Fish | Scomberomorus commerson | Narrow-barred Spanish mackerel | 1.54 g |
| Fish | Scomberomorus maculatus | Atlantic Spanish mackerel | 1.13 g |
| Fish | Scomberomorus regalis | Cero / Pintado / Kingfish / Cero mackerel | 2.18 g |
| Bird | Scopus umbretta | Hamerkop / Umbrette | 4.08 g |
| Fish | Scorpaena plumieri | Spotted scorpionfish | 132 mg |
| Fish | Scorpaena porcus | Black scorpionfish / European scorpionfish / Small-scaled scorpionfish | 135 mg |
| Fish | Scorpaena scrofa | Red scorpionfish / Bigscale scorpionfish / Large-scaled scorpion fish / Rascasse | 155 mg |
| Fish | Scorpaenodes guamensis | Guam scorpionfish / Common scorpionfish | 44 mg |
| Fish | Scorpaenodes kelloggi | Kellogg’s scorpionfish | 7.1 mg |
| Fish | Scorpaenodes parvipinnis | Low-fin scorpionfish | 58 mg |
| Fish | Scorpaenopsis diabolus | False stonefish / False scorpionfish / Devil scorpionfish | 147 mg |
| Fish | Scorpis aequipinnis | Sea sweep / Maomao / Snapjack / Sweep | 709 mg |
| Mammal | Scotomanes ornatus | Harlequin bat | 384 mg |
| Mammal | Scotonycteris zenkeri | Zenker’s fruit bat / Tear-drop bat | 710 mg |
| Mammal | Scotophilus dinganii | African yellow bat / African yellow house bat / Yellow-bellied house bat / Dingan’s Bat | 439 mg |
| Mammal | Scotophilus heathii | Greater Asiatic yellow bat | 476 mg |
| Mammal | Scotophilus kuhlii | Lesser Asiatic yellow bat | 342 mg |
| Mammal | Scotophilus nigrita | Schreber’s yellow bat / Giant house bat | 1.05 g |
| Mammal | Scotorepens sanborni | Northern broad-nosed bat | 158 mg |
| Mammal | Scotozous dormeri | Dormer’s bat / Dormer’s pipistrelle | 143 mg |
| Amphibian | Scutiger chintingensis | Chinting lazy toad / Chinting alpine toad | 27.7 mg |
| Amphibian | Scutiger glandulatus | Hopachai lazy toad / Chest gland cat-eyed toad | 67.7 mg |
| Amphibian | Scutiger muliensis | Muli cat-eyed toad | 90.7 mg |
| Fish | Scyliorhinus canicula | Small-spotted catshark / Sandy dogfish / Lesser-spotted dogfish / Rough-hound | 1.38 g |
| Fish | Scyliorhinus stellaris | Nursehound / Large-spotted dogfish / Greater spotted dogfish / Bull huss | 2.85 g |
| Fish | Scymnodon plunketi | Plunket shark / Plunket’s shark | 4.2 g |
| Fish | Scymnodon ringens | Knifetooth dogfish | 5.02 g |
| Bird | Scytalopus unicolor | Unicolored tapaculo | 932 mg |
| Bird | Scythrops novaehollandiae | Channel-billed cuckoo | 5.55 g |
| Fish | Sebastapistes cyanostigma | Yellowspotted scorpionfish / Coral scorpionfish / Pink and yellow scorpionfish | 56 mg |
| Fish | Sebastes mentella | Beaked redfish / Deepwater redfin / Ocean perch / Atlantic redfish | 1.06 g |
| Fish | Sebastes norvegicus | Rose fish / Rock fish / Ocean perch / Atlantic redfish | 764 mg |
| Fish | Sebastes viviparus | Norway redfish / Small redfish / Lesser redfish / Ocean perch | 466 mg |
| Bird | Seiurus aurocapilla | Ovenbird | 702 mg |
| Fish | Selar crumenophthalmus | Bigeye scad / Big-eyed scad / Purse-eyed scad / Goggle-eyed scad | 1.02 g |
| Fish | Selaroides leptolepis | Yellowstripe scad / Yellowstripe trevally / Yellow-banded trevally / Smooth-tailed trevally | 871 mg |
| Bird | Selasphorus rufus | Rufous hummingbird | 166 mg |
| Bird | Selenidera maculirostris | Spot-billed toucanet | 3.01 g |
| Fish | Selenotoca multifasciata | Spotbanded scat / Striped scat / Banded scat / Barred scat | 349 mg |
| Bird | Seleucidis melanoleucus | Twelve-wired bird-of-paradise | 3.53 g |
| Amphibian | Semnodactylus wealii | Weale’s running frog / Weale’s frog / Rattling frog | 16.8 mg |
| Mammal | Semnopithecus ajax | Kashmir gray langur | 132 g |
| Mammal | Semnopithecus dussumieri | Southern plains gray langur | 90.1 g |
| Mammal | Semnopithecus entellus | Northern plains gray langur / Sacred langur / Bengal sacred langur / Hanuman langur | 113 g |
| Mammal | Semnopithecus hypoleucos | Black-footed gray langur | 88.3 g |
| Mammal | Semnopithecus johnii | Nilgiri langur | 85.5 g |
| Mammal | Semnopithecus priam | Tufted gray langur / Madras gray langur / Coromandel sacred langur | 83.1 g |
| Mammal | Semnopithecus schistaceus | Nepal gray langur | 129 g |
| Mammal | Semnopithecus vetulus | Purple-faced langur / Purple-faced leaf monkey | 61.7 g |
| Bird | Semnornis ramphastinus | Toucan barbet | 1.98 g |
| Bird | Sericornis frontalis | White-browed scrubwren | 811 mg |
| Bird | Sericornis magnirostra | Large-billed scrubwren | 621 mg |
| Bird | Sericulus chrysocephalus | Regent bowerbird | 3.46 g |
| Bird | Serinus canaria | Atlantic canary / Common canary / Wild canary / Island canary | 587 mg |
| Bird | Serinus serinus | European serin / Serin | 522 mg |
| Fish | Seriola rivoliana | Longfin yellowtail / Almaco jack / Silvercoat jack / Deep-water | 3.56 g |
| Fish | Seriolina nigrofasciata | Black-banded trevally | 2.55 g |
| Fish | Serranus cabrilla | Comber | 163 mg |
| Fish | Serranus hepatus | Brown comber | 133 mg |
| Fish | Serranus scriba | Painted comber | 115 mg |
| Fish | Serrivomer beanii | Bean’s sawtooth eel / Longfin sawpalate / Saw-tooth snipe eel / Sawtooth eel | 34.6 mg |
| Mammal | Setifer setosus | Greater hedgehog tenrec / Large Madagascar hedgehog / Sokina | 1.4 g |
| Mammal | Setonix brachyurus | Quokka | 13.8 g |
| Bird | Setophaga americana | Northern parula | 404 mg |
| Bird | Setophaga caerulescens | Black-throated blue warbler | 448 mg |
| Bird | Setophaga castanea | Bay-breasted warbler | 425 mg |
| Bird | Setophaga citrina | Hooded warbler | 497 mg |
| Bird | Setophaga coronata | Yellow-rumped warbler | 528 mg |
| Bird | Setophaga magnolia | Magnolia warbler | 380 mg |
| Bird | Setophaga pensylvanica | Chestnut-sided warbler | 390 mg |
| Bird | Setophaga petechia | Yellow warbler | 539 mg |
| Bird | Setophaga ruticilla | American redstart | 351 mg |
| Fish | Shuja horei | – | 185 mg |
| Bird | Sialia mexicana | Western bluebird | 870 mg |
| Bird | Sialia sialis | Eastern bluebird | 1.26 g |
| Bird | Sicalis flaveola | Saffron finch | 728 mg |
| Fish | Sicydium brevifile | – | 18.5 mg |
| Fish | Sicydium salvini | – | 31.1 mg |
| Fish | Sicyopterus lagocephalus | Red-tailed goby / Blue stream goby | 31.5 mg |
| Fish | Sicyopterus pugnans | – | 20.7 mg |
| Fish | Siganus argenteus | Streamlined spinefoot / Forktail rabbitfish / Schooling rabbitfish / Silver spinefoot | 453 mg |
| Fish | Siganus canaliculatus | White-spotted spinefoot / White-spotted rabbitfish / Pearly spinefoot / Seagrass rabbitfish | 347 mg |
| Fish | Siganus doliatus | Barred spinefoot / Scribbled rabbitfish / Pencil-streaked rabbitfish / Barred Spanish mackerel | 437 mg |
| Fish | Siganus luridus | Dusky spinefoot / Squaretail rabbitfish | 435 mg |
| Fish | Siganus puellus | Masked spinefoot / Masked rabbitfish / Bluelined rabbitfish / Blue-lined spinefoot | 334 mg |
| Fish | Siganus punctatus | Goldspotted spinefoot / Goldspotted rabbitfish / Punctuated spinefoot / Spotted rabbitfish | 372 mg |
| Fish | Siganus rivulatus | Marbled spinefoot / Rivulated rabbitfish / Surf parrotfish | 219 mg |
| Fish | Siganus spinus | Little spinefoot / Scribbled rabbitfish / Blunt-nosed spinefoot / Spiny rabbitfish | 215 mg |
| Fish | Siganus vulpinus | Foxface rabbitfish / Common foxface / Black-face rabbit fish / Badger fish | 377 mg |
| Bird | Sigelus silens | Fiscal flycatcher | 1.04 g |
| Mammal | Sigmodon hispidus | Hispid cotton rat | 1.16 g |
| Fish | Sigmops bathyphilus | Spark anglemouth / Deepsea fangjaw / Deepsea lightfish | 16 mg |
| Fish | Sigmops elongatus | Elongated bristlemouth | 51.3 mg |
| Fish | Silhouettea aegyptia | Red Sea goby | 9.09 mg |
| Fish | Sillago maculata | Trumpeter whiting / Winter whiting / Diver whiting | 256 mg |
| Fish | Simenchelys parasitica | Snubnosed eel / Pug-nosed eel / Slime eel / Snub-nose parasitic eel | 244 mg |
| Mammal | Simias concolor | Pig-tailed langur | 219 g |
| Fish | Simochromis diagramma | – | 204 mg |
| Fish | Sinosturio transmontanus | White sturgeon | 650 mg |
| Bird | Sipia nigricauda | Esmeraldas antbird | 1.07 g |
| Bird | Sitta canadensis | Red-breasted nuthatch | 590 mg |
| Bird | Sitta carolinensis | White-breasted nuthatch | 890 mg |
| Bird | Sitta europaea | Eurasian nuthatch / Wood nuthatch / Nuthatch | 1.05 g |
| Bird | Sitta neumayer | Western rock nuthatch | 1.16 g |
| Bird | Sitta pygmaea | Pygmy nuthatch | 570 mg |
| Bird | Sittasomus griseicapillus | Olivaceous woodcreeper | 570 mg |
| Bird | Smicrornis brevirostris | Weebill | 300 mg |
| Amphibian | Smilisca phaeota | New Granada cross-banded tree frog / Masked tree frog | 36.2 mg |
| Amphibian | Smilisca sordida | Veragua cross-banded tree frog | 39.5 mg |
| Mammal | Sminthopsis bindi | Kakadu dunnart | 356 mg |
| Mammal | Sminthopsis crassicaudata | Fat-tailed dunnart | 366 mg |
| Mammal | Sminthopsis douglasi | Julia Creek dunnart | 356 mg |
| Mammal | Sminthopsis griseoventer | Grey-bellied dunnart / Gray-bellied dunnart | 499 mg |
| Mammal | Sminthopsis hirtipes | Hairy-footed dunnart | 417 mg |
| Mammal | Sminthopsis leucopus | White-footed dunnart | 417 mg |
| Mammal | Sminthopsis macroura | Striped-faced dunnart | 407 mg |
| Mammal | Sminthopsis murina | Slender-tailed dunnart / Common dunnart | 429 mg |
| Mammal | Sminthopsis virginiae | Red-cheeked dunnart | 346 mg |
| Bird | Smithornis capensis | African broadbill / Black-capped broadbill / Delacour’s broadbill | 809 mg |
| Bird | Smutsornis africanus | Double-banded courser / Two-banded courser | 1.2 g |
| Mammal | Solenodon paradoxus | Hispaniolan solenodon / Agouta | 4.24 g |
| Bird | Somateria mollissima | Common eider / St. Cuthbert’s duck / Cuddy’s duck | 7.82 g |
| Bird | Somateria spectabilis | King eider | 7.08 g |
| Fish | Somniosus microcephalus | Greenland shark / Gurry shark | 10.3 g |
| Mammal | Sorex araneus | Common shrew / Eurasian shrew | 213 mg |
| Mammal | Sorex arcticus | Arctic shrew / Blackback shrew / Saddlebacked shrew | 270 mg |
| Mammal | Sorex cinereus | Cinereus shrew / Masked shrew | 170 mg |
| Mammal | Sorex fumeus | Smoky shrew | 210 mg |
| Mammal | Sorex hoyi | American pygmy shrew / Eastern pygmy shrew | 92.3 mg |
| Mammal | Sorex minutus | Eurasian pygmy shrew / Pygmy shrew | 117 mg |
| Mammal | Sorex monticolus | Montane shrew | 230 mg |
| Mammal | Sorex ornatus | Ornate shrew | 120 mg |
| Mammal | Sorex palustris | American water shrew / Northern water shrew | 310 mg |
| Mammal | Sorex trowbridgii | Trowbridge’s shrew | 210 mg |
| Mammal | Sorex vagrans | Vagrant shrew / Wandering shrew | 170 mg |
| Mammal | Sotalia fluviatilis | Tucuxi / Bufeo gris / Bufeo negro | 688 g |
| Mammal | Spalacopus cyanus | Coruro | 1.58 g |
| Fish | Sparisoma aurofrenatum | Redband parrotfish | 432 mg |
| Fish | Sparisoma viride | Stoplight parrotfish | 544 mg |
| Fish | Spathodus erythrodon | – | 39 mg |
| Fish | Spathodus marlieri | – | 63 mg |
| Bird | Spatula clypeata | Northern shoveler / Shoveler | 3.49 g |
| Bird | Spatula cyanoptera | Cinnamon teal | 3.27 g |
| Bird | Spatula discors | Blue-winged teal | 2.99 g |
| Bird | Spatula hottentota | Blue-billed teal / Spotted teal / Hottentot teal | 3.12 g |
| Bird | Spatula platalea | Red shoveler | 3.63 g |
| Bird | Spatula querquedula | Garganey | 2.78 g |
| Bird | Spatula rhynchotis | Australasian shoveler | 3.64 g |
| Bird | Spatula smithii | Cape shoveler / Cape shoveller | 3.91 g |
| Bird | Spatula versicolor | Silver teal / Versicolor teal | 3.76 g |
| Bird | Speculanas specularis | Bronze-winged duck / Spectacled duck | 6.32 g |
| Amphibian | Speleomantes italicus | Italian cave salamander | 21.2 mg |
| Amphibian | Speleomantes strinatii | French cave salamander / North-west Italian cave salamander / Strinati’s cave salamander | 21.8 mg |
| Mammal | Speothos venaticus | Bush dog | 40.5 g |
| Bird | Spermestes bicolor | Black-and-white mannikin / Black-and-white munia / Red-backed mannikin | 438 mg |
| Bird | Spermestes cucullata | Bronze mannikin / Bronze munia | 392 mg |
| Bird | Spermophaga haematina | Western bluebill | 911 mg |
| Mammal | Spermophilopsis leptodactylus | Long-clawed ground squirrel | 6.18 g |
| Mammal | Spermophilus alashanicus | Alashan ground squirrel | 2.89 g |
| Mammal | Spermophilus citellus | European ground squirrel / European souslik | 2.89 g |
| Mammal | Spermophilus dauricus | Daurian ground squirrel | 2.75 g |
| Mammal | Spermophilus erythrogenys | Red-cheeked ground squirrel | 3.44 g |
| Mammal | Spermophilus fulvus | Yellow ground squirrel | 4.55 g |
| Mammal | Spermophilus major | Russet ground squirrel / Hibernating large ground squirrel / Large-toothed souslik | 4.12 g |
| Mammal | Spermophilus musicus | Caucasian Mountain ground squirrel | 2.62 g |
| Mammal | Spermophilus pygmaeus | Little ground squirrel / Little souslik | 2.44 g |
| Mammal | Spermophilus relictus | Relict ground squirrel | 3.49 g |
| Mammal | Spermophilus suslicus | Speckled ground squirrel / Spotted souslik | 2.55 g |
| Mammal | Spermophilus xanthoprymnus | Asia Minor ground squirrel / Anatolian souslik / Anatolian ground squirrel | 3.04 g |
| Mammal | Sphaerias blanfordi | Blanford’s fruit bat | 832 mg |
| Mammal | Sphaeronycteris toxophyllum | Visored bat | 537 mg |
| Insect | Sphecius convallis | Pacific cicada killer | 11.7 mg |
| Insect | Sphecodes ranunculi | – | 0.364 mg |
| Bird | Sphecotheres vieilloti | Australasian figbird | 2.32 g |
| Bird | Sphecotheres viridis | Green figbird / Timor figbird | 2.32 g |
| Bird | Spheniscus demersus | African penguin / Cape penguin / South African penguin / Black-footed penguin | 13.8 g |
| Bird | Spheniscus humboldti | Humboldt penguin | 17 g |
| Reptile | Sphenodon punctatus | Tuatara | 629 mg |
| Reptile | Sphenomorphus darlingtoni | – | 28 mg |
| Reptile | Sphenomorphus fragilis | – | 11.3 mg |
| Reptile | Sphenomorphus nigrolabris | – | 52.4 mg |
| Fish | Sphyraena barracuda | Great barracuda | 4.53 g |
| Fish | Sphyraena chrysotaenia | Yellowstripe barracuda | 105 mg |
| Fish | Sphyraena forsteri | Bigeye barracuda | 1.56 g |
| Fish | Sphyraena jello | Pickhandle barracuda / Banded barracuda / Yellowtail barracuda / Sea pike | 803 mg |
| Fish | Sphyraena obtusata | Obtuse barracuda | 187 mg |
| Bird | Sphyrapicus nuchalis | Red-naped sapsucker | 1.32 g |
| Bird | Sphyrapicus varius | Yellow-bellied sapsucker | 1.35 g |
| Fish | Sphyrna lewini | Scalloped hammerhead / Bronze hammerhead / Kinky-headed hammerhead / Southern hammerhead | 53.5 g |
| Fish | Sphyrna mokarran | Great hammerhead | 99.1 g |
| Fish | Sphyrna zygaena | Smooth hammerhead | 48.2 g |
| Fish | Spicara maena | Blotched picarel | 359 mg |
| Mammal | Spilocuscus kraemeri | Admiralty Island cuscus / Manus Island spotted cuscus | 11.7 g |
| Mammal | Spilocuscus maculatus | Common spotted cuscus / White cuscus | 13.6 g |
| Mammal | Spilocuscus rufoniger | Black-spotted cuscus | 17.1 g |
| Mammal | Spilogale gracilis | Western spotted skunk | 6.41 g |
| Mammal | Spilogale putorius | Eastern spotted skunk | 6.17 g |
| Bird | Spilopelia chinensis | Spotted dove / Eastern spotted dove / Mountain dove / Pearl-necked dove | 1.4 g |
| Bird | Spilopelia senegalensis | Laughing dove / Laughing turtle dove / Palm dove / Senegal dove | 1.29 g |
| Bird | Spilornis cheela | Crested serpent eagle | 8 g |
| Fish | Spinachia spinachia | Sea stickleback / Fifteen-spined stickleback / Fifteenspine stickleback | 33 mg |
| Bird | Spindalis zena | Western spindalis / Stripe-headed tanager | 1.36 g |
| Bird | Spinus pinus | Pine siskin | 590 mg |
| Bird | Spinus spinus | Eurasian siskin / Common siskin / European siskin | 549 mg |
| Bird | Spinus tristis | American goldfinch | 560 mg |
| Bird | Spiza americana | Dickcissel | 941 mg |
| Bird | Spizaetus melanoleucus | Black-and-white hawk-eagle | 8.39 g |
| Bird | Spizaetus ornatus | Ornate hawk-eagle | 8.94 g |
| Bird | Spizaetus tyrannus | Black hawk-eagle / Tyrant hawk-eagle | 9.43 g |
| Bird | Spizelloides arborea | American tree sparrow / Winter sparrow | 768 mg |
| Bird | Spiziapteryx circumcincta | Spot-winged falconet | 3.5 g |
| Fish | Spondyliosoma cantharus | Black seabream | 1.2 g |
| Bird | Sporophila americana | Wing-barred seedeater | 621 mg |
| Bird | Sporophila angolensis | Chestnut-bellied seed finch / Lesser seed-finch | 704 mg |
| Fish | Spratelloides delicatulus | Blue sprat / Delicate round herring / Blueback sprat / Piha | 14.5 mg |
| Fish | Sprattus sprattus | European sprat / Baltic herring / Brisling sardine / Russian sardine | 114 mg |
| Fish | Squaliolus laticaudus | Spined pygmy shark | 440 mg |
| Fish | Squalus acanthias | Spiny dogfish / Spurdog / Mud shark / Piked dogfish | 3.12 g |
| Fish | Squalus griffini | Northern spiny dogfish / Brown dogfish / Grey spiny dogfish / Griffin’s dogfish | 4.96 g |
| Fish | Squalus megalops | Shortnose spurdog / Piked spurdog | 2.24 g |
| Fish | Squalus melanurus | Blacktailed spurdog | 3.27 g |
| Fish | Squatina squatina | Common angelshark | 2.06 g |
| Bird | Stagonopleura bella | Beautiful firetail | 663 mg |
| Bird | Stagonopleura guttata | Diamond firetail | 650 mg |
| Bird | Starnoenas cyanocephala | Blue-headed quail dove / Blue-headed partridge-dove | 1.69 g |
| Fish | Steatogenys duidae | – | 78 mg |
| Fish | Steatogenys elegans | Barred knifefish | 93 mg |
| Bird | Steatornis caripensis | Oilbird / Guácharo | 4.04 g |
| Fish | Stegastes fuscus | Dusky damselfish | 163 mg |
| Fish | Stegastes lacrymatus | Whitespotted devil / Jewel damselfish | 113 mg |
| Fish | Stegastes nigricans | Dusky farmerfish | 153 mg |
| Dinosaur | Stegosaurus stenops | Stegosaurus | 22.5 g |
| Bird | Stelgidopteryx ruficollis | Southern rough-winged swallow | 550 mg |
| Insect | Stelis breviuscula | – | 0.382 mg |
| Mammal | Stenella attenuata | Pantropical spotted dolphin | 793 g |
| Mammal | Stenella coeruleoalba | Striped dolphin | 857 g |
| Mammal | Stenella longirostris | Spinner dolphin / Long-snouted dolphin | 550 g |
| Mammal | Steno bredanensis | Rough-toothed dolphin | 1.54 kg |
| Fish | Stenobrachius leucopsarus | Northern lampfish / Smallfin lanternfish | 30.4 mg |
| Fish | Stenogobius genivittatus | Chinstripe goby | 42.1 mg |
| Bird | Stephanoaetus coronatus | Crowned eagle / African crowned eagle / Crowned hawk-eagle | 14.6 g |
| Bird | Stercorarius longicaudus | Long-tailed jaeger / Long-tailed skua | 3.07 g |
| Bird | Stercorarius maccormicki | South polar skua / MacCormick’s skua | 7.03 g |
| Bird | Stercorarius parasiticus | Parasitic jaeger / Arctic skua / Parasitic skua / Arctic jaeger | 4.03 g |
| Bird | Stercorarius pomarinus | Pomarine jaeger / Pomarine skua / Pomatorhine skua | 4.84 g |
| Bird | Stercorarius skua | Great skua / Bonxie | 7.26 g |
| Bird | Sterna dougallii | Roseate tern | 1.59 g |
| Bird | Sterna forsteri | Forster’s tern | 2.04 g |
| Bird | Sterna hirundo | Common tern | 1.86 g |
| Bird | Sterna paradisaea | Arctic tern | 1.55 g |
| Bird | Sterna sumatrana | Black-naped tern | 1.61 g |
| Bird | Sterna trudeaui | Snowy-crowned tern / Trudeau’s tern | 2.15 g |
| Bird | Sterna vittata | Antarctic tern | 2.08 g |
| Fish | Sternarchella orthos | – | 131 mg |
| Fish | Sternarchella sima | – | 258 mg |
| Fish | Sternarchorhamphus muelleri | – | 208 mg |
| Fish | Sternarchorhynchus curvirostris | – | 179 mg |
| Reptile | Sternotherus carinatus | Razor-backed musk turtle | 281 mg |
| Bird | Sternula albifrons | Little tern | 1 g |
| Fish | Stethojulis balteata | Belted wrasse | 16.3 mg |
| Fish | Stethojulis bandanensis | Red-shoulder wrasse | 154 mg |
| Fish | Stethojulis interrupta | Cutribbon wrasse | 46.7 mg |
| Fish | Stethojulis strigiventer | Three-ribbon wrasse / Silverstreak wrasse / Silverbelly wrasse / Lined rainbowfish | 62.7 mg |
| Bird | Stictonetta naevosa | Freckled duck / Monkey duck / Oatmeal duck | 4.57 g |
| Bird | Stigmatura budytoides | Greater wagtail-tyrant | 549 mg |
| Bird | Stilpnia cyanicollis | Blue-necked tanager | 662 mg |
| Fish | Stiphodon elegans | Green riffle goby | 11.3 mg |
| Bird | Stipiturus malachurus | Southern emu-wren | 414 mg |
| Bird | Stizoptera bichenovii | Double-barred finch / Bicheno’s finch / Owl finch | 412 mg |
| Fish | Stolephorus commersonnii | Commerson’s anchovy / Devis’s anchovy / Long-jawed anchovy / Teri anchovy | 56 mg |
| Fish | Stomatorhinus ivindoensis | Biale Creek mormyrid | 49.9 mg |
| Fish | Stomias boa | Boa dragonfish / Scaly dragonfish / Dragon-boa / Boa scaly dragonfish | 16.6 mg |
| Bird | Stomiopera flava | Yellow honeyeater | 738 mg |
| Bird | Stomiopera unicolor | White-gaped honeyeater | 847 mg |
| Amphibian | Strauchbufo raddei | Mongolian toad / Piebald toad / Siberian sand toad | 35 mg |
| Bird | Strepera fuliginosa | Black currawong / Black jay | 5.91 g |
| Bird | Strepera graculina | Pied currawong | 5.53 g |
| Bird | Strepera versicolor | Grey currawong | 5.5 g |
| Bird | Streptopelia capicola | Ring-necked dove / Cape turtle dove / Half-collared dove / Cape Lager | 1.54 g |
| Bird | Streptopelia decaocto | Eurasian collared dove / Collared dove | 1.46 g |
| Bird | Streptopelia decipiens | Mourning collared dove / African mourning dove | 1.66 g |
| Bird | Streptopelia orientalis | Oriental turtle dove / Rufous turtle dove | 1.54 g |
| Bird | Streptopelia risoria | Barbary dove / Ringed turtle dove / Ringneck dove / Ring-necked turtle dove | 1.2 g |
| Bird | Streptopelia roseogrisea | African collared dove | 1.1 g |
| Bird | Streptopelia semitorquata | Red-eyed dove | 1.65 g |
| Bird | Streptopelia tranquebarica | Red collared dove / Red turtle dove | 1.1 g |
| Bird | Streptopelia turtur | European turtle dove | 1.35 g |
| Bird | Streptopelia vinacea | Vinaceous dove | 1.24 g |
| Bird | Streptoprocne zonaris | White-collared swift | 1.53 g |
| Mammal | Strigocuscus pelengensis | Banggai cuscus / Peleng cuscus / Menden’s cuscus / Peleng phalanger | 6.33 g |
| Bird | Strigops habroptilus | Kākāpō / Owl-parrot | 15.8 g |
| Bird | Strix aluco | Tawny owl / Brown owl | 9.21 g |
| Bird | Strix leptogrammica | Brown wood owl | 9.85 g |
| Bird | Strix nebulosa | Great grey owl / Great gray owl / Phantom of the north / Cinereous owl | 12.8 g |
| Bird | Strix nigrolineata | Black-and-white owl | 7.67 g |
| Bird | Strix uralensis | Ural owl | 10.5 g |
| Bird | Strix varia | Barred owl / Northern barred owl / Striped owl / Hoot owl | 12.7 g |
| Bird | Strix virgata | Mottled owl | 6.32 g |
| Bird | Strix woodfordii | African wood owl / Woodford’s owl | 5.7 g |
| Fish | Strongylura strongylura | Spottail needlefish / Blackspot longtom | 160 mg |
| Reptile | Strophurus ciliaris | Northern spiny-tailed gecko | 50.4 mg |
| Reptile | Strophurus elderi | Jewelled gecko | 17.2 mg |
| Bird | Struthidea cinerea | Apostlebird / Grey jumper / Lousy jack / Happy family | 3.09 g |
| Bird | Struthio camelus | Common ostrich | 41.6 g |
| Bird | Sturnella magna | Eastern meadowlark | 2.3 g |
| Bird | Sturnella neglecta | Western meadowlark | 2.01 g |
| Mammal | Sturnira lilium | Little yellow-shouldered bat | 559 mg |
| Mammal | Sturnira ludovici | Highland yellow-shouldered bat | 676 mg |
| Mammal | Sturnira tildae | Tilda’s yellow-shouldered bat | 726 mg |
| Bird | Sturnus unicolor | Spotless starling | 1.83 g |
| Bird | Sturnus vulgaris | Common starling / European starling | 1.93 g |
| Fish | Suezichthys gracilis | Slender wrasse | 35 mg |
| Fish | Sufflamen albicaudatum | Bluethroat triggerfish | 377 mg |
| Fish | Sufflamen bursa | Lei triggerfish / Bursa triggerfish / Scythe triggerfish / Boomerang triggerfish | 412 mg |
| Fish | Sufflamen chrysopterum | Halfmoon triggerfish | 329 mg |
| Fish | Sufflamen fraenatum | Masked triggerfish | 741 mg |
| Fish | Sufflogobius bibarbatus | Pelagic goby / Bearded goby | 39.7 mg |
| Bird | Sugomel nigrum | Black honeyeater | 383 mg |
| Bird | Sula leucogaster | Brown booby | 9.37 g |
| Bird | Sula variegata | Peruvian booby | 10.2 g |
| Mammal | Suncus etruscus | Etruscan shrew / Etruscan pygmy shrew / White-toothed pygmy shrew / Savi’s pygmy shrew | 71 mg |
| Mammal | Suncus megalurus | Climbing shrew | 150 mg |
| Mammal | Suncus murinus | Asian house shrew / House shrew / Grey musk shrew / Asian musk shrew | 363 mg |
| Mammal | Sundamys muelleri | Müller’s giant Sunda rat | 3.5 g |
| Mammal | Surdisorex polulus | Mount Kenya mole shrew | 400 mg |
| Mammal | Suricata suricatta | Meerkat / Suricate | 10.3 g |
| Bird | Surnia ulula | Northern hawk-owl / Northern hawk owl / Hawk owl | 7.37 g |
| Bird | Surniculus velutinus | Philippine drongo-cuckoo | 990 mg |
| Mammal | Sus domesticus | Pig / Swine / Hog / Domestic pig | 180 g |
| Mammal | Sus scrofa | Wild boar / Common wild pig / Wild swine / Eurasian wild pig | 178 g |
| Mammal | Syconycteris australis | Common blossom bat / Southern blossom bat / Queensland blossom bat | 592 mg |
| Bird | Sylvia atricapilla | Eurasian blackcap / Blackcap | 657 mg |
| Bird | Sylvia borin | Garden warbler | 610 mg |
| Mammal | Sylvicapra grimmia | Common duiker / Gray duiker / Bush duiker | 78.2 g |
| Mammal | Sylvilagus audubonii | Desert cottontail / Audubon’s cottontail | 6.27 g |
| Mammal | Sylvilagus bachmani | Brush rabbit / Western brush rabbit / Californian brush rabbit | 6.58 g |
| Mammal | Sylvilagus brasiliensis | Common tapeti / Brazilian cottontail / Forest cottontail | 4.5 g |
| Mammal | Sylvilagus floridanus | Eastern cottontail | 7.27 g |
| Mammal | Sylvilagus gabbi | Central American tapeti / Gabb’s cottontail | 4.5 g |
| Amphibian | Sylvirana cubitalis | Siam frog / Siamese frog / Yellow stream frog / Darkeared frog | 52.5 mg |
| Mammal | Sylvisorex lunaris | Moon forest shrew | 340 mg |
| Bird | Syma megarhyncha | Mountain kingfisher | 1.4 g |
| Bird | Syma torotoro | Yellow-billed kingfisher | 1.15 g |
| Mammal | Symphalangus syndactylus | Siamang | 132 g |
| Fish | Symphodus bailloni | Baillon’s wrasse | 218 mg |
| Fish | Symphodus mediterraneus | Axillary wrasse | 124 mg |
| Fish | Symphodus melops | Corkwing wrasse | 225 mg |
| Fish | Symphodus ocellatus | Ocellated wrasse | 151 mg |
| Fish | Symphodus rostratus | Pointed-snout wrasse / Long-snout wrasse | 115 mg |
| Fish | Symphodus tinca | East Atlantic peacock wrasse | 297 mg |
| Bird | Symposiachrus guttula | Spot-winged monarch / Spot-wing monarch flycatcher | 702 mg |
| Bird | Symposiachrus trivirgatus | Spectacled monarch | 651 mg |
| Bird | Synallaxis brachyura | Slaty spinetail / Slaty castlebuilder | 891 mg |
| Fish | Synanceia verrucosa | Reef stonefish | 870 mg |
| Fish | Synaphobranchus kaupii | Kaup’s arrowtooth eel / Kaup’s cut-throat eel / Gray’s cutthroat / Longnosed eel | 141 mg |
| Mammal | Synaptomys cooperi | Southern bog lemming | 590 mg |
| Mammal | Syncerus caffer | African buffalo / Cape buffalo | 644 g |
| Bird | Syndactyla guttulata | Guttulate foliage-gleaner | 1.23 g |
| Fish | Syngnathoides biaculeatus | Alligator pipefish / Double-ended pipefish | 29.1 mg |
| Fish | Syngnathus abaster | Black-striped pipefish | 3.4 mg |
| Fish | Syngnathus acus | Greater pipefish | 29 mg |
| Fish | Syngnathus schlegeli | Pacific seaweed pipefish | 9.5 mg |
| Fish | Syngnathus typhle | Broadnosed pipefish / Deepnosed pipefish | 19 mg |
| Fish | Synodus binotatus | Two-spot lizardfish / Spotnose lizardfish | 34 mg |
| Fish | Synodus dermatogenys | Sand lizardfish / Clearfin lizardfish / Variegated lizardfish | 230 mg |
| Fish | Synodus indicus | Indian lizardfish | 224 mg |
| Fish | Synodus saurus | Atlantic lizardfish / Bluestripe lizardfish | 111 mg |
| Fish | Synodus variegatus | Variegated lizardfish | 238 mg |
| Insect | Synoeca septentrionalis | Northern warrior wasp | 0.585 mg |
| Bird | Synoicus chinensis | King quail / Blue-breasted quail / Asian blue quail / Chinese painted quail | 534 mg |
| Bird | Synthliboramphus antiquus | Ancient murrelet | 2.52 g |
| Bird | Syrigma sibilatrix | Whistling heron | 4.78 g |
| Bird | Syrmaticus reevesii | Reeves’s pheasant | 4.11 g |
| Bird | Syrrhaptes paradoxus | Pallas’s sandgrouse | 1.6 g |
| Insect | Systropha planidens | – | 0.92 mg |
| Bird | Tachornis phoenicobia | Antillean palm swift | 290 mg |
| Bird | Tachybaptus dominicus | Least grebe | 1.5 g |
| Bird | Tachybaptus novaehollandiae | Australasian grebe | 1.72 g |
| Bird | Tachybaptus ruficollis | Little grebe | 1.67 g |
| Bird | Tachycineta bicolor | Tree swallow | 570 mg |
| Bird | Tachycineta thalassina | Violet-green swallow | 478 mg |
| Bird | Tachyeres leucocephalus | Chubut steamer duck / White-headed flightless steamer duck | 10.6 g |
| Bird | Tachyeres patachonicus | Flying steamer duck / Flying steamer-duck / Flying steamerduck | 9.95 g |
| Bird | Tachyeres pteneres | Flightless steamer-duck / Magellanic flightless steamer-duck / Fuegian steamer duck | 10.3 g |
| Mammal | Tachyglossus aculeatus | Short-beaked echidna / Common echidna / Short-nosed echidna | 20.7 g |
| Bird | Tachymarptis melba | Alpine swift | 1.13 g |
| Mammal | Tachyoryctes splendens | Northeast African mole-rat | 1.94 g |
| Bird | Tachyphonus delatrii | Tawny-crested tanager | 767 mg |
| Bird | Tachyspiza brevipes | Levant sparrowhawk | 3.3 g |
| Bird | Tachyspiza cirrocephala | Collared sparrowhawk | 2.48 g |
| Bird | Tachyspiza fasciata | Brown goshawk | 4.66 g |
| Bird | Tachyspiza haplochroa | White-bellied goshawk / New Caledonia goshawk / White-bellied sparrowhawk | 4.05 g |
| Bird | Tachyspiza novaehollandiae | Grey goshawk / White goshawk | 4.91 g |
| Mammal | Tadarida aegyptiaca | Egyptian free-tailed bat / Egyptian guano bat / Egyptian nyctinome | 393 mg |
| Bird | Tadorna ferruginea | Ruddy shelduck | 5.34 g |
| Bird | Tadorna tadorna | Common shelduck | 5.21 g |
| Bird | Tadorna tadornoides | Australian shelduck / Chestnut-breasted shelduck / Mountain duck | 6.16 g |
| Bird | Tadorna variegata | Paradise shelduck / Paradise duck | 5.86 g |
| Fish | Taeniamia fucata | Orange-lined cardinalfish / Painted cardinalfish | 66 mg |
| Fish | Taenianotus triacanthus | Leaf scorpionfish / Paperfish / Paper scorpionfish / Sailfin leaffish | 29 mg |
| Fish | Taenioides cirratus | Bearded worm goby | 48.3 mg |
| Fish | Taenioides limicola | – | 3.85 mg |
| Bird | Taeniopygia guttata | Sunda zebra finch | 434 mg |
| Fish | Taeniura lymma | Bluespotted ribbontail ray | 5.68 g |
| Reptile | Takydromus sexlineatus | Asian grass lizard / Six-striped long-tailed grass lizard / Long-tailed grass lizard | 38.2 mg |
| Mammal | Talpa europaea | European mole / Common mole / Northern mole | 1.29 g |
| Mammal | Tamandua tetradactyla | Southern tamandua / Collared anteater / Lesser anteater | 25.4 g |
| Mammal | Tamias striatus | Eastern chipmunk | 1.98 g |
| Mammal | Tamiasciurus hudsonicus | American red squirrel / Pine squirrel / Piney squirrel / Red squirrel | 4.34 g |
| Mammal | Tamiops mcclellandii | Himalayan striped squirrel / Western striped squirrel / Burmese striped squirrel | 1.95 g |
| Fish | Tanganicodus irsacae | Spotfin goby cichlid | 50 mg |
| Bird | Tangara icterocephala | Silver-throated tanager | 588 mg |
| Bird | Tanygnathus lucionensis | Blue-naped parrot / Blue-crowned green parrot / Luzon parrot / Philippine green parrot | 5.92 g |
| Bird | Tanygnathus megalorynchos | Great-billed parrot / Moluccan parrot / Island parrot | 7.23 g |
| Bird | Tanysiptera galatea | Common paradise kingfisher / Galatea paradise kingfisher / Racquet-tailed kingfisher | 1.48 g |
| Bird | Tanysiptera sylvia | Buff-breasted paradise kingfisher | 1.18 g |
| Bird | Tapera naevia | Striped cuckoo | 1.09 g |
| Mammal | Taphozous australis | Coastal sheath-tailed bat / Coastal tomb bat | 504 mg |
| Mammal | Taphozous hildegardeae | Hildegarde’s tomb bat | 543 mg |
| Mammal | Taphozous longimanus | Long-winged tomb bat | 470 mg |
| Mammal | Taphozous mauritianus | Mauritian tomb bat | 551 mg |
| Mammal | Taphozous melanopogon | Black-bearded tomb bat | 536 mg |
| Mammal | Taphozous theobaldi | Theobald’s tomb bat | 681 mg |
| Insect | Tapinoma melanocephalum | Ghost ant | 0.011 mg |
| Mammal | Tapirus bairdii | Baird’s tapir / Central American tapir | 85 g |
| Mammal | Tapirus indicus | Malayan tapir / Asian tapir / Asiatic tapir / Oriental tapir | 252 g |
| Mammal | Tapirus terrestris | South American tapir / Brazilian tapir / Amazonian tapir / Maned tapir | 175 g |
| Bird | Taraba major | Great antshrike | 1.57 g |
| Reptile | Tarentola delalandii | Tenerife gecko / Delalande’s gecko / Tenerife wall gecko | 54.3 mg |
| Reptile | Tarentola mauritanica | Common wall gecko / Moorish gecko / Crocodile gecko / European common gecko | 70.5 mg |
| Amphibian | Taricha rivularis | Red-bellied newt | 33.8 mg |
| Fish | Tarletonbeania crenularis | Blue lanternfish | 9.3 mg |
| Mammal | Tarsipes rostratus | Honey possum / Noolbenger | 366 mg |
| Mammal | Tarsius dentatus | Dian’s tarsier / Diana tarsier | 3 g |
| Mammal | Tarsius tarsier | Spectral tarsier / Selayar tarsier | 3.75 g |
| Mammal | Tatera indica | Indian gerbil / Antelope rat | 1.84 g |
| Mammal | Taterillus gracilis | Gracile tateril / Slender gerbil | 1 g |
| Bird | Tauraco corythaix | Knysna turaco / Knysna loerie | 2.8 g |
| Bird | Tauraco erythrolophus | Red-crested turaco | 2.43 g |
| Bird | Tauraco hartlaubi | Hartlaub’s turaco | 3.47 g |
| Bird | Tauraco livingstonii | Livingstone’s turaco | 3.21 g |
| Bird | Tauraco persa | Guinea turaco / Green turaco / Green lourie | 3.37 g |
| Bird | Tauraco rossae | Ross’s turaco / Lady Ross’s turaco | 4.2 g |
| Bird | Tauraco violaceus | Violet turaco / Violaceous plantain eater | 3.7 g |
| Mammal | Taurotragus derbianus | Giant eland / Lord Derby’s eland / Greater eland | 534 g |
| Mammal | Taurotragus oryx | Common eland / Southern eland / Eland antelope | 440 g |
| Fish | Taurulus bubalis | Long-spined bullhead / Long-spined sea-scorpion / Long-spined scorpion fish | 142 mg |
| Mammal | Taxidea taxus | American badger | 49.4 g |
| Mammal | Tayassu pecari | White-lipped peccary | 137 g |
| Bird | Tchagra australis | Brown-crowned tchagra | 1.27 g |
| Fish | Teixeirichthys jordani | Jordan’s damsel | 37 mg |
| Fish | Telmatochromis temporalis | – | 53.6 mg |
| Bird | Telophorus zeylonus | Bokmakierie | 1.98 g |
| Mammal | Tenrec ecaudatus | Tailless tenrec / Common tenrec | 2.63 g |
| Bird | Tephrodornis pondicerianus | Common woodshrike | 921 mg |
| Fish | Terapon jarbua | Jarbua terapon / Crescent grunter / Crescent banded grunter / Crescent perch | 435 mg |
| Fish | Terapon puta | Spiny-checked grunter / Three-lined grunter / Small-scaled banded grunter / Small-scaled terapon | 133 mg |
| Bird | Terathopius ecaudatus | Bateleur / Bateleur eagle | 15.2 g |
| Bird | Terpsiphone atrocaudata | Black paradise flycatcher / Japanese paradise flycatcher | 673 mg |
| Bird | Tersina viridis | Swallow tanager | 963 mg |
| Reptile | Testudo graeca | Greek tortoise / Moorish tortoise / Spur-thighed tortoise | 319 mg |
| Reptile | Testudo hermanni | Hermann’s tortoise | 476 mg |
| Reptile | Testudo horsfieldii | Central Asian tortoise / Afghan tortoise / Steppe tortoise / Russian tortoise | 319 mg |
| Reptile | Testudo marginata | Marginated tortoise | 572 mg |
| Mammal | Tetheopsis ingens | – | 350 g |
| Bird | Tetrao urogallus | Western capercaillie / Eurasian capercaillie / Wood grouse / Heather cock | 5.92 g |
| Bird | Tetraogallus himalayensis | Himalayan snowcock | 6.2 g |
| Fish | Tetrapleurodon geminis | Mexican brook lamprey | 9.2 mg |
| Fish | Tetrapturus angustirostris | Shortbill spearfish / Short-nosed spearfish | 2.5 g |
| Bird | Tetrastes bonasia | Hazel grouse / Hazel hen | 1.94 g |
| Fish | Tetrosomus gibbosus | Camel cowfish / Helmet cowfish / Humpback turretfish / Thornbacked boxfish | 187 mg |
| Bird | Thalassarche cauta | Shy albatross / Shy mollymawk | 20 g |
| Bird | Thalassarche chrysostoma | Grey-headed albatross / Gray-headed mollymawk | 19.4 g |
| Bird | Thalassarche melanophris | Black-browed albatross / Black-browed mollymawk | 17.2 g |
| Bird | Thalasseus bergii | Greater crested tern / Crested tern / Swift tern / Great crested tern | 3.48 g |
| Bird | Thalasseus maximus | Royal tern | 3.96 g |
| Bird | Thalasseus sandvicensis | Sandwich tern | 2.64 g |
| Bird | Thalassoica antarctica | Antarctic petrel | 6.92 g |
| Fish | Thalassoma amblycephalum | Blunt-headed wrasse / Blue-headed wrasse / Blue-headed zoe / Moon wrasse | 171 mg |
| Fish | Thalassoma bifasciatum | Bluehead / Bluehead wrasse / Blue-headed wrasse | 102 mg |
| Fish | Thalassoma duperrey | Saddle wrasse | 357 mg |
| Fish | Thalassoma hebraicum | Goldbar wrasse | 160 mg |
| Fish | Thalassoma jansenii | Jansen’s wrasse | 265 mg |
| Fish | Thalassoma lunare | Moon wrasse / Crescent wrasse / Lyretail wrasse | 150 mg |
| Fish | Thalassoma lutescens | Yellow-brown wrasse / Sunset wrasse | 324 mg |
| Fish | Thalassoma quinquevittatum | Fivestripe wrasse / Red-ribbon wrasse | 197 mg |
| Fish | Thalassoma rueppellii | Klunzinger’s wrasse / Rüppell’s wrasse | 197 mg |
| Bird | Thalurania furcata | Fork-tailed woodnymph | 207 mg |
| Bird | Thalurania glaucopis | Violet-capped woodnymph | 242 mg |
| Bird | Thamnomanes caesius | Cinereous antshrike | 631 mg |
| Bird | Thamnophilus caerulescens | Variable antshrike | 1.02 g |
| Bird | Thamnophilus punctatus | Northern slaty antshrike | 972 mg |
| Reptile | Thamnophis sirtalis | Common garter snake | 98.5 mg |
| Bird | Thectocercus acuticaudatus | Blue-crowned parakeet / Blue-crowned conure / Sharp-tailed conure | 5.44 g |
| Bird | Theristicus caerulescens | Plumbeous ibis | 9.22 g |
| Mammal | Theropithecus gelada | Gelada / Bleeding-heart monkey / Gelada baboon | 133 g |
| Bird | Thinocorus orbignyianus | Grey-breasted seedsnipe | 1.2 g |
| Bird | Thinocorus rumicivorus | Least seedsnipe | 746 mg |
| Mammal | Thinocyon velox | – | 5.7 g |
| Bird | Thinornis cucullatus | Hooded plover / Hooded dotterel | 1.17 g |
| Bird | Thinornis dubius | Little ringed plover | 889 mg |
| Bird | Thinornis melanops | Black-fronted dotterel | 870 mg |
| Bird | Thinornis placidus | Long-billed plover | 1.12 g |
| Mammal | Thomomys bottae | Botta’s pocket gopher / Valley pocket gopher | 1.42 g |
| Mammal | Thomomys bulbivorus | Camas pocket gopher / Camas rat / Willamette Valley gopher | 2.2 g |
| Mammal | Thomomys talpoides | Northern pocket gopher | 1.37 g |
| Bird | Thraupis episcopus | Blue-gray tanager / Blue jean | 1.15 g |
| Bird | Thraupis palmarum | Palm tanager / Green jean | 980 mg |
| Bird | Threnetes ruckeri | Band-tailed barbthroat | 280 mg |
| Bird | Threskiornis aethiopicus | African sacred ibis | 9.8 g |
| Bird | Threskiornis melanocephalus | Black-headed ibis / Oriental white ibis / Indian white ibis / Black-necked ibis | 9 g |
| Bird | Threskiornis molucca | Australian white ibis | 9.63 g |
| Bird | Threskiornis spinicollis | Straw-necked ibis | 8.71 g |
| Bird | Thryomanes bewickii | Bewick’s wren | 539 mg |
| Mammal | Thryonomys swinderianus | Greater cane rat / Grasscutter | 10.5 g |
| Bird | Thryothorus ludovicianus | Carolina wren | 880 mg |
| Fish | Thryssa kammalensis | Kammal thryssa | 77 mg |
| Fish | Thryssa polybranchialis | Humphead thryssa | 65 mg |
| Fish | Thunnus albacares | Yellowfin tuna | 5.11 g |
| Fish | Thunnus thynnus | Atlantic bluefin tuna / Northern bluefin tuna / Tunny | 3.08 g |
| Mammal | Thylacinus cynocephalus | Thylacine / Tasmanian tiger / Tasmanian wolf | 49.7 g |
| Mammal | Thylamys elegans | Elegant fat-tailed mouse opossum / Chilean mouse opossum | 1.12 g |
| Mammal | Thylamys pallidior | White-bellied fat-tailed mouse opossum | 733 mg |
| Mammal | Thylogale billardierii | Tasmanian pademelon / Rufous-bellied pademelon / Red-bellied pademelon | 22.9 g |
| Mammal | Thylogale browni | Brown’s pademelon | 18.6 g |
| Mammal | Thylogale brunii | Dusky pademelon / Dusky wallaby / Aru Island wallaby | 17.8 g |
| Mammal | Thylogale stigmatica | Red-legged pademelon | 18.1 g |
| Mammal | Thylogale thetis | Red-necked pademelon | 19.5 g |
| Mammal | Thyroptera tricolor | Spix’s disk-winged bat | 230 mg |
| Fish | Thyrsitoides marleyi | Blacksail snake mackerel / Black snoek | 735 mg |
| Bird | Tiaris olivaceus | Yellow-faced grassquit | 499 mg |
| Bird | Tichodroma muraria | Wallcreeper / Red-winged wall creeper | 460 mg |
| Bird | Tigrisoma lineatum | Rufescent tiger heron | 7.11 g |
| Bird | Tigrisoma mexicanum | Bare-throated tiger heron | 7.02 g |
| Reptile | Tiliqua gigas | Indonesian blue-tongued skink | 461 mg |
| Reptile | Tiliqua multifasciata | Centralian blue-tongued skink / Centralian blue-tongue | 408 mg |
| Reptile | Tiliqua rugosa | Shingleback skink / Shingleback lizard / Bobtail lizard / Two-headed skink | 533 mg |
| Reptile | Tiliqua scincoides | Common blue-tongued lizard / Common blue-tongued skink / Common bluetongue | 424 mg |
| Reptile | Timon lepidus | Ocellated lizard / Jewelled lizard / Eyed lizard / Jeweled lacerta | 237 mg |
| Reptile | Timon tangitanus | Moroccan eyed lizard | 206 mg |
| Bird | Tinamus major | Great tinamou | 2.99 g |
| Bird | Tityra cayana | Black-tailed tityra | 1.67 g |
| Bird | Tityra semifasciata | Masked tityra | 1.95 g |
| Bird | Tockus deckeni | Von der Decken’s hornbill | 3.57 g |
| Bird | Tockus erythrorhynchus | Northern red-billed hornbill | 3.45 g |
| Bird | Tockus flavirostris | Eastern yellow-billed hornbill / Northern yellow-billed hornbill | 4.4 g |
| Bird | Tockus monteiri | Monteiro’s hornbill | 3.2 g |
| Bird | Todiramphus chloris | Collared kingfisher / White-collared kingfisher / Black-masked kingfisher / Mangrove kingfisher | 1.39 g |
| Bird | Todiramphus macleayii | Forest kingfisher / Macleay’s kingfisher / Blue kingfisher | 1.11 g |
| Bird | Todiramphus pyrrhopygius | Red-backed kingfisher | 1.17 g |
| Bird | Todiramphus sanctus | Sacred kingfisher | 1.07 g |
| Bird | Todirostrum cinereum | Common tody-flycatcher | 321 mg |
| Bird | Todus mexicanus | Puerto Rican tody | 414 mg |
| Bird | Todus subulatus | Broad-billed tody | 445 mg |
| Bird | Todus todus | Jamaican tody | 425 mg |
| Bird | Tolmomyias sulphurescens | Yellow-olive flatbill / Yellow-olive flycatcher | 529 mg |
| Mammal | Tolypeutes matacus | Southern three-banded armadillo / La Plata three-banded armadillo / Azara’s domed armadillo | 8.86 g |
| Mammal | Tonatia bidens | Greater round-eared bat | 788 mg |
| Bird | Torgos tracheliotos | Lappet-faced vulture / Nubian vulture | 28.9 g |
| Fish | Torpedo marmorata | Marbled electric ray | 3.58 g |
| Fish | Torpedo torpedo | Common torpedo / Ocellate torpedo / Eyed electric ray | 780 mg |
| Fish | Torquigener flavimaculosus | Yellowspotted puffer | 153 mg |
| Bird | Touit dilectissimus | Blue-fronted parrotlet | 2.69 g |
| Bird | Touit purpuratus | Sapphire-rumped parrotlet | 2.49 g |
| Bird | Toxorhamphus poliopterus | Slaty-headed longbill / Grey-winged longbill | 448 mg |
| Bird | Toxostoma curvirostre | Curve-billed thrasher | 2.21 g |
| Bird | Toxostoma rufum | Brown thrasher / Brown thrush / Fox-coloured thrush | 2.07 g |
| Reptile | Trachemys scripta | Pond slider | 646 mg |
| Fish | Trachinocephalus myops | Blunt-nose lizardfish | 128 mg |
| Fish | Trachinotus ovatus | Pompano / Derbio / Silverfish | 3.08 g |
| Fish | Trachinus draco | Greater weever | 248 mg |
| Mammal | Trachops cirrhosus | Fringe-lipped bat | 912 mg |
| Fish | Trachurus novaezelandiae | Yellowtail horse mackerel / Yakka | 130 mg |
| Fish | Trachurus trachurus | Atlantic horse mackerel / Common scad / European horse mackerel | 1.02 g |
| Amphibian | Trachycephalus typhonius | Veined tree frog / Common milk frog | 94 mg |
| Reptile | Trachylepis perrotetii | African red-sided skink / Red-sided skink / Teita mabuya | 173 mg |
| Reptile | Trachylepis quinquetaeniata | African five-lined skink / Rainbow mabuya | 105 mg |
| Insect | Trachymyrmex coniktzi | – | 0.054 mg |
| Insect | Trachymyrmex zeteki | – | 0.064 mg |
| Bird | Trachyphonus margaritatus | Yellow-breasted barbet | 1.2 g |
| Bird | Trachyphonus vaillantii | Crested barbet | 1.69 g |
| Mammal | Trachypithecus auratus | East Javan langur / Ebony lutung / Javan langur / Javan lutung | 64.4 g |
| Mammal | Trachypithecus cristatus | Silvery lutung / Silvered leaf monkey / Silvery langur | 57.3 g |
| Mammal | Trachypithecus francoisi | François’ langur / Francois’ leaf monkey / Tonkin leaf monkey / White side-burned black langur | 94.4 g |
| Mammal | Trachypithecus geei | Gee’s golden langur / Golden langur | 81.3 g |
| Mammal | Trachypithecus germaini | Germain’s langur | 76 g |
| Mammal | Trachypithecus obscurus | Dusky leaf monkey / Spectacled langur / Spectacled leaf monkey | 61.9 g |
| Mammal | Trachypithecus phayrei | Phayre’s leaf monkey / Phayre’s langur | 74.8 g |
| Mammal | Trachypithecus pileatus | Capped langur | 106 g |
| Fish | Trachyrhamphus serratus | Crested pipefish / Saw pipefish | 7.5 mg |
| Fish | Trachyrincus scabrus | Roughsnout grenadier / Mediterranean longsnout grenadier | 401 mg |
| Fish | Trachyscorpia cristulata | Atlantic thornyhead | 282 mg |
| Mammal | Tragelaphus angasii | Lowland nyala / Nyala | 232 g |
| Mammal | Tragelaphus buxtoni | Mountain nyala / Balbok | 330 g |
| Mammal | Tragelaphus eurycerus | Bongo / Western bongo / Lowland bongo | 396 g |
| Mammal | Tragelaphus imberbis | Lesser kudu | 219 g |
| Mammal | Tragelaphus scriptus | Harnessed bushbuck / Northern bushbuck | 162 g |
| Mammal | Tragelaphus spekii | Sitatunga | 151 g |
| Mammal | Tragelaphus strepsiceros | Greater kudu | 352 g |
| Mammal | Tragelaphus sylvaticus | Cape bushbuck / Imbabala / Southern bushbuck | 165 g |
| Bird | Tragopan temminckii | Temminck’s tragopan | 4.85 g |
| Fish | Tragulichthys jaculiferus | Longspine burrfish | 266 mg |
| Mammal | Tragulus javanicus | Java mouse-deer | 15.6 g |
| Mammal | Tragulus napu | Greater mouse-deer / Greater Malay chevrotain / Napu | 18.3 g |
| Reptile | Trapelus mutabilis | Desert agama | 99.4 mg |
| Mammal | Tremarctos ornatus | Spectacled bear / Andean bear | 195 g |
| Fish | Trematocara macrostoma | – | 39.9 mg |
| Fish | Trematocara stigmaticum | – | 34 mg |
| Fish | Trematocara unimaculatum | – | 98.6 mg |
| Bird | Treron apicauda | Pin-tailed green pigeon / Pin-tailed pigeon | 1.45 g |
| Bird | Treron calvus | African green pigeon | 1.64 g |
| Bird | Treron capellei | Large green pigeon | 2.28 g |
| Bird | Treron curvirostra | Thick-billed green pigeon | 1.41 g |
| Bird | Treron formosae | Taiwan green pigeon / Whistling green pigeon / Whistling green pigeon | 1.61 g |
| Bird | Treron fulvicollis | Cinnamon-headed green pigeon | 1.35 g |
| Bird | Treron phoenicopterus | Yellow-footed green pigeon / Yellow-legged green pigeon | 1.66 g |
| Bird | Treron pompadora | Pompadour green pigeon / Sri Lanka green pigeon / Ceylon green pigeon | 1.44 g |
| Bird | Treron sieboldii | White-bellied green pigeon / Siebold’s green pigeon | 1.4 g |
| Bird | Treron vernans | Pink-necked green pigeon | 1.3 g |
| Fish | Triacanthus biaculeatus | Short-nosed tripod fish / Black-finned triple-spine / Blacktail tripodfish / Hollow-snouted tripodfish | 373 mg |
| Fish | Triaenodon obesus | Whitetip reef shark | 15.4 g |
| Mammal | Triaenops persicus | Rufous trident bat / Persian trident bat / Triple nose-leaf bat | 271 mg |
| Fish | Triakis semifasciata | Leopard shark | 3.15 g |
| Reptile | Tribolonotus gracilis | Red-eyed crocodile skink / New Guinea crocodile skink | 117 mg |
| Reptile | Tribolonotus novaeguineae | White-eyed crocodile skink | 111 mg |
| Bird | Tribonyx mortierii | Tasmanian nativehen / Tasmanian native-hen / Tasmanian native hen / Piyura | 4.2 g |
| Bird | Tribonyx ventralis | Black-tailed nativehen | 2.87 g |
| Dinosaur | Triceratops horridus | Triceratops | 72.2 g |
| Mammal | Trichechus inunguis | Amazonian manatee | 88 g |
| Mammal | Trichechus manatus | West Indian manatee / North American manatee | 324 g |
| Fish | Trichiurus lepturus | Largehead hairtail / Beltfish | 369 mg |
| Bird | Trichodere cockerelli | White-streaked honeyeater | 673 mg |
| Bird | Trichoglossus borneus | Red lory | 4.95 g |
| Bird | Trichoglossus chlorolepidotus | Scaly-breasted lorikeet | 3.16 g |
| Bird | Trichoglossus concinnus | Musk lorikeet | 2.92 g |
| Bird | Trichoglossus cyanogenius | Black-winged lory / Biak red lory | 5.02 g |
| Bird | Trichoglossus haematodus | Coconut lorikeet / Green-naped lorikeet | 3.65 g |
| Bird | Trichoglossus ornatus | Ornate lorikeet / Ornate lory | 3.64 g |
| Bird | Trichoglossus rubiginosus | Pohnpei lorikeet / Serehd | 3.47 g |
| Bird | Trichoglossus squamatus | Violet-necked lory | 3.97 g |
| Bird | Tricholaema leucomelas | Acacia pied barbet / Pied barbet | 1.02 g |
| Spider | Trichonephila clavipes | Golden silk orb-weaver / Golden silk spider / Golden orb weaver spider | 0.112 mg |
| Mammal | Trichosurus caninus | Short-eared possum | 12.1 g |
| Mammal | Trichosurus vulpecula | Common brushtail possum | 11.6 g |
| Bird | Trichothraupis melanops | Black-goggled tanager | 932 mg |
| Mammal | Trichys fasciculata | Long-tailed porcupine | 13.1 g |
| Bird | Triclaria malachitacea | Blue-bellied parrot / Purple-bellied parrot | 4.43 g |
| Mammal | Triconodon mordax | – | 730 mg |
| Fish | Tridentiger obscurus | Dusky tripletooth goby | 26.9 mg |
| Fish | Tridentiger trigonocephalus | Chameleon goby | 52 mg |
| Fish | Trigla lyra | Piper gurnard / Piper / Lyre gurnard | 354 mg |
| Fish | Triglachromis otostigma | – | 51 mg |
| Fish | Triglops murrayi | Moustache sculpin | 210 mg |
| Bird | Trigonoceps occipitalis | White-headed vulture | 23.8 g |
| Fish | Trimma avidori | Avidor’s pygmygoby | 1.97 mg |
| Fish | Trimma mendelssohni | Mendelssohn’s pygmygoby | 5.6 mg |
| Fish | Trimma okinawae | Orange-red pygmygoby | 3.85 mg |
| Fish | Trimma striatum | Red-lined pygmygoby | 3.35 mg |
| Bird | Tringa brevipes | Grey-tailed tattler / Siberian tattler / Polynesian tattler | 1.4 g |
| Bird | Tringa erythropus | Spotted redshank | 1.8 g |
| Bird | Tringa flavipes | Lesser yellowlegs | 1.11 g |
| Bird | Tringa glareola | Wood sandpiper | 1.11 g |
| Bird | Tringa incana | Wandering tattler | 1.34 g |
| Bird | Tringa melanoleuca | Greater yellowlegs | 1.93 g |
| Bird | Tringa nebularia | Common greenshank | 1.86 g |
| Bird | Tringa ochropus | Green sandpiper | 1.2 g |
| Bird | Tringa semipalmata | Willet | 2.41 g |
| Bird | Tringa solitaria | Solitary sandpiper | 925 mg |
| Bird | Tringa stagnatilis | Marsh sandpiper | 1.37 g |
| Bird | Tringa totanus | Common redshank | 1.88 g |
| Reptile | Trioceros melleri | Meller’s chameleon / Giant one-horned chameleon | 333 mg |
| Fish | Trisopterus esmarkii | Norway pout | 249 mg |
| Fish | Trisopterus luscus | Pouting / Bib / Pout whiting / Pout | 774 mg |
| Fish | Trisopterus minutus | Poor cod | 378 mg |
| Amphibian | Triturus cristatus | Northern crested newt / Great crested newt / Warty newt | 21 mg |
| Amphibian | Triturus marmoratus | Marbled newt | 30.6 mg |
| Bird | Trochalopteron elliotii | Elliot’s laughingthrush | 1.82 g |
| Bird | Trochilus polytmus | Red-billed streamertail / Doctor bird / Scissor-tail / Scissors tail hummingbird | 229 mg |
| Bird | Troglodytes aedon | Northern house wren | 540 mg |
| Bird | Troglodytes troglodytes | Eurasian wren / Wren | 483 mg |
| Bird | Trogon chionurus | White-tailed trogon | 1.85 g |
| Bird | Trogon citreolus | Citreoline trogon | 1.53 g |
| Bird | Trogon curucui | Blue-crowned trogon | 923 mg |
| Bird | Trogon massena | Slaty-tailed trogon | 2.21 g |
| Bird | Trogon melanurus | Black-tailed trogon | 1.93 g |
| Bird | Trogon mesurus | Ecuadorian trogon | 1.93 g |
| Bird | Trogon violaceus | Guianan trogon | 1.46 g |
| Bird | Trogon viridis | Green-backed trogon / Amazonian white-tailed trogon | 1.85 g |
| Reptile | Trogonophis wiegmanni | Checkerboard worm lizard | 21 mg |
| Dinosaur | Troodon formosus | Troodon | 31.5 g |
| Fish | Tropheus brichardi | – | 139 mg |
| Fish | Tropheus moorii | Blunthead cichlid | 149 mg |
| Reptile | Tropicagama temporalis | Swamplands lashtail / Northern water dragon | 160 mg |
| Reptile | Tropiocolotes steudneri | Steudner’s dwarf gecko / Algerian sand gecko / Steudner’s pigmy gecko | 10.8 mg |
| Fish | Trygonoptera testacea | Common stingaree | 3.56 g |
| Fish | Trypauchen vagina | Burrowing goby | 22.9 mg |
| Fish | Trypauchenichthys sumatrensis | Indonesian eelgoby | 3.33 mg |
| Mammal | Tscherskia triton | Greater long-tailed hamster | 1.29 g |
| Mammal | Tupaia everetti | Mindanao treeshrew / Philippine tree shrew | 4.05 g |
| Mammal | Tupaia glis | Common treeshrew | 2.92 g |
| Mammal | Tupaia javanica | Horsfield’s treeshrew | 2.55 g |
| Mammal | Tupaia minor | Pygmy treeshrew | 2.46 g |
| Reptile | Tupinambis teguixin | Gold tegu / Common tegu / Golden tegu / Black tegu | 1.15 g |
| Bird | Turacoena manadensis | White-faced cuckoo-dove / White-faced dove | 1.66 g |
| Bird | Turdoides jardineii | Arrow-marked babbler | 2.15 g |
| Bird | Turdus iliacus | Redwing | 1.4 g |
| Bird | Turdus lherminieri | Forest thrush | 2.28 g |
| Bird | Turdus merula | Common blackbird / Eurasian blackbird | 1.94 g |
| Bird | Turdus migratorius | American robin | 1.86 g |
| Bird | Turdus pallidus | Pale thrush | 1.77 g |
| Bird | Turdus pelios | African thrush / West African thrush | 1.55 g |
| Bird | Turdus philomelos | Song thrush | 1.61 g |
| Bird | Turdus pilaris | Fieldfare | 1.83 g |
| Bird | Turdus torquatus | Ring ouzel | 1.73 g |
| Bird | Turdus viscivorus | Mistle thrush / Stormcock | 2.4 g |
| Bird | Turnix melanogaster | Black-breasted buttonquail | 1.1 g |
| Bird | Turnix nigricollis | Madagascar buttonquail / Madagascan buttonquail | 900 mg |
| Bird | Turnix pyrrhothorax | Red-chested buttonquail | 591 mg |
| Bird | Turnix suscitator | Barred buttonquail / Common bustard-quail | 736 mg |
| Bird | Turnix sylvaticus | Common buttonquail / Kurrichane buttonquail / Andalusian hemipode | 600 mg |
| Bird | Turnix varius | Painted buttonquail | 1.08 g |
| Bird | Turnix velox | Little buttonquail | 694 mg |
| Mammal | Tursiops aduncus | Indo-Pacific bottlenose dolphin | 1.5 kg |
| Mammal | Tursiops truncatus | Common bottlenose dolphin / Atlantic bottlenose dolphin | 1.6 kg |
| Bird | Turtur afer | Blue-spotted wood dove / Blue-spotted dove | 900 mg |
| Bird | Turtur brehmeri | Blue-headed wood dove / Blue-headed dove | 1.37 g |
| Bird | Turtur chalcospilos | Emerald-spotted wood dove / Emerald-spotted dove | 953 mg |
| Bird | Turtur tympanistria | Tambourine dove | 1 g |
| Bird | Tychaedon coryphoeus | Karoo scrub robin / Karoo robin | 748 mg |
| Fish | Tylochromis polylepis | – | 135 mg |
| Mammal | Tylonycteris pachypus | Lesser bamboo bat / Lesser flat-headed bat | 77 mg |
| Mammal | Tylonycteris robustula | Greater bamboo bat | 116 mg |
| Fish | Tylosurus crocodilus | Houndfish / Crocodile needlefish | 884 mg |
| Amphibian | Tylototriton verrucosus | Himalayan newt / Crocodile newt / Crocodile salamander / Himalayan salamander | 34.9 mg |
| Bird | Tympanuchus phasianellus | Sharp-tailed grouse / Sharptail / Fire grouse | 2.98 g |
| Dinosaur | Tyrannosaurus rex | Tyrannosaurus rex / T-Rex | 202 g |
| Bird | Tyrannus dominicensis | Gray kingbird / Grey kingbird / White-breasted kingbird / Pitirre | 1.04 g |
| Bird | Tyrannus forficatus | Scissor-tailed flycatcher / Swallow-tailed flycatcher / Scissorstail | 891 mg |
| Bird | Tyrannus savana | Fork-tailed flycatcher | 758 mg |
| Bird | Tyrannus tyrannus | Eastern kingbird | 982 mg |
| Bird | Tyrannus verticalis | Western kingbird | 1.02 g |
| Bird | Tyto alba | Western barn owl / Common barn owl | 6.49 g |
| Bird | Tyto capensis | African grass owl / Grass owl | 5.42 g |
| Bird | Tyto javanica | Eastern barn owl | 6.74 g |
| Bird | Tyto longimembris | Eastern grass owl / Chinese grass owl / Australasian grass owl | 5.43 g |
| Bird | Tyto novaehollandiae | Australian masked owl / Australasian masked owl / Masked owl | 8.77 g |
| Bird | Tyto tenebricosa | Sooty owl / Greater sooty owl | 13.2 g |
| Mammal | Uintatherium anceps | – | 275 g |
| Fish | Umbra krameri | European mudminnow | 30 mg |
| Reptile | Underwoodisaurus milii | Thick-tailed / Barking gecko | 53.1 mg |
| Fish | Upeneus asymmetricus | Asymmetrical goatfish | 183 mg |
| Fish | Upeneus sulphureus | Sulphur goatfish | 102 mg |
| Fish | Upeneus taeniopterus | Finstripe goatfish | 520 mg |
| Fish | Upeneus tragula | Freckled goatfish | 235 mg |
| Fish | Upeneus vittatus | Striped goatfish | 514 mg |
| Amphibian | Uperoleia marmorata | Marbled toadlet | 11.6 mg |
| Bird | Upupa epops | Eurasian hoopoe / Common hoopoe | 1.2 g |
| Bird | Uraeginthus bengalus | Red-cheeked cordon-bleu / Red-cheeked cordonbleu | 448 mg |
| Mammal | Uranomys ruddi | Rudd’s mouse / White-bellied brush-furred rat | 770 mg |
| Bird | Uria aalge | Common murre / Common guillemot | 5.06 g |
| Bird | Uria lomvia | Thick-billed murre / Brünnich’s guillemot | 5.3 g |
| Bird | Urile pelagicus | Pelagic cormorant / Baird’s cormorant / Violet-green cormorant / Pelagic shag | 5.84 g |
| Bird | Urile penicillatus | Brandt’s cormorant | 12.6 g |
| Bird | Urile urile | Red-faced cormorant / Red-faced shag / Violet shag | 8.52 g |
| Fish | Urobatis halleri | Round stingray / Haller’s round ray / Little round stingray | 2.71 g |
| Bird | Urocissa caerulea | Taiwan blue magpie / Taiwan magpie / Formosan blue magpie / Long-tailed mountain lady | 4.6 g |
| Bird | Urocissa erythroryncha | Red-billed blue magpie | 3.8 g |
| Mammal | Urocitellus armatus | Uinta ground squirrel | 3.09 g |
| Mammal | Urocitellus beldingi | Belding’s ground squirrel / Pot gut / Sage rat / Picket-pin | 3.12 g |
| Mammal | Urocitellus brunneus | Northern Idaho ground squirrel | 2.11 g |
| Mammal | Urocitellus canus | Merriam’s ground squirrel | 1.6 g |
| Mammal | Urocitellus columbianus | Columbian ground squirrel | 3.77 g |
| Mammal | Urocitellus elegans | Wyoming ground squirrel | 2.76 g |
| Mammal | Urocitellus mollis | Piute ground squirrel | 1.67 g |
| Mammal | Urocitellus parryii | Arctic ground squirrel | 5.29 g |
| Mammal | Urocitellus richardsonii | Richardson’s ground squirrel / Dakrat / Flickertail | 3.33 g |
| Mammal | Urocitellus townsendii | Townsend’s ground squirrel | 1.98 g |
| Mammal | Urocitellus undulatus | Long-tailed ground squirrel / Eversmann’s souslik | 4.29 g |
| Mammal | Urocitellus washingtoni | Washington ground squirrel | 1.8 g |
| Bird | Urocolius indicus | Red-faced mousebird | 1.11 g |
| Bird | Urocolius macrourus | Blue-naped mousebird / Blue-naped coly | 1.04 g |
| Mammal | Urocyon cinereoargenteus | Gray fox / Grey fox | 36.9 g |
| Mammal | Urocyon littoralis | Island fox | 29.3 g |
| Mammal | Uroderma bilobatum | Tent-making bat | 554 mg |
| Bird | Urodynamis taitensis | Long-tailed koel / Long-tailed cuckoo / Pacific long-tailed cuckoo / Sparrow hawk | 2.07 g |
| Fish | Urolophus bucculentus | Sandyback stingaree / Great stingaree | 2.96 g |
| Fish | Urolophus cruciatus | Crossback stingaree / Banded stingaree | 2.45 g |
| Fish | Urolophus paucimaculatus | Sparsely spotted stingaree / White-spotted stingaree / Dixon’s stingaree | 891 mg |
| Reptile | Uromastyx acanthinura | North African mastigure / North African spiny-tailed lizard | 335 mg |
| Reptile | Uromastyx ornata | Ornate mastigure | 223 mg |
| Mammal | Ursus americanus | American black bear / Black bear | 234 g |
| Mammal | Ursus arctos | Brown bear / Grizzly bear | 326 g |
| Mammal | Ursus maritimus | Polar bear | 441 g |
| Mammal | Ursus thibetanus | Asian black bear / Asiatic black bear / Moon bear / White-chested bear | 292 g |
| Mammal | Urva edwardsii | Indian grey mongoose / Asian grey mongoose | 10.5 g |
| Mammal | Urva fusca | Indian brown mongoose / Brown mongoose | 12.6 g |
| Mammal | Urva javanica | Javan mongoose | 7.22 g |
| Mammal | Urva smithii | Ruddy mongoose | 14.2 g |
| Mammal | Urva urva | Crab-eating mongoose | 21.6 g |
| Mammal | Urva vitticolla | Stripe-necked mongoose | 25.8 g |
| Fish | Valenciennea puellaris | Orange-spotted sleeper-goby / Orange-dashed goby / Maiden goby / Diamond Watchman goby | 53.4 mg |
| Fish | Valenciennea sexguttata | Chalk goby / Sixspot goby / Sleeper blue dot goby | 53.6 mg |
| Fish | Valenciennea strigata | Blueband goby / Golden-head sleeper goby / Pennant glider | 50 mg |
| Mammal | Vampyressa pusilla | Southern little yellow-eared bat | 394 mg |
| Mammal | Vampyrodes caraccioli | Great stripe-faced bat / Stripe-faced vampire bat | 947 mg |
| Mammal | Vampyrum spectrum | Spectral bat / Great false vampire bat / Great spectral bat / American false vampire bat | 2.8 g |
| Bird | Vanellus albiceps | White-crowned lapwing / White-headed lapwing / White-headed plover / White-crowned plover | 2.47 g |
| Bird | Vanellus armatus | Blacksmith lapwing / Blacksmith plover | 2.01 g |
| Bird | Vanellus chilensis | Southern lapwing / Queltehue | 2.48 g |
| Bird | Vanellus cinereus | Grey-headed lapwing | 2.8 g |
| Bird | Vanellus coronatus | Crowned lapwing / Crowned plover | 2.19 g |
| Bird | Vanellus miles | Masked lapwing / Masked plover / Spur-winged plover / Plover | 2.95 g |
| Bird | Vanellus senegallus | African wattled lapwing / Senegal wattled plover / Wattled lapwing | 2.52 g |
| Bird | Vanellus tricolor | Banded lapwing | 2.48 g |
| Bird | Vanellus vanellus | Northern lapwing / Peewit / Pewit / Green plover | 2.19 g |
| Reptile | Varanus acanthurus | Spiny-tailed monitor / Australian spiny-tailed monitor / Ridge-tailed monitor / Ackie dwarf monitor | 312 mg |
| Reptile | Varanus gilleni | Pygmy mulga monitor / Gillen’s monitor / Mulga monitor | 107 mg |
| Reptile | Varanus gouldii | Sand goanna / Gould’s monitor / Racehorse goanna / Sand monitor | 2.19 g |
| Reptile | Varanus griseus | Desert monitor | 722 mg |
| Reptile | Varanus macraei | Blue-spotted tree monitor / Blue tree monitor | 790 mg |
| Reptile | Varanus niloticus | Nile monitor / African small-grain lizard / Water leguaan / River leguaan | 2.44 g |
| Reptile | Varanus prasinus | Emerald tree monitor / Green tree monitor | 594 mg |
| Reptile | Varanus salvadorii | Crocodile monitor / Papuan monitor / Salvadori’s monitor | 2.4 g |
| Reptile | Varanus salvator | Asian water monitor | 2.27 g |
| Mammal | Varecia rubra | Red ruffed lemur | 31.1 g |
| Mammal | Varecia variegata | Black-and-white ruffed lemur | 30.4 g |
| Fish | Variabilichromis moorii | – | 87.6 mg |
| Fish | Variola louti | Yellow-edged lyretail / Yellowedge coronation trout / Fairy cod / Lunar tail rock cod | 430 mg |
| Bird | Vauriella gularis | Eyebrowed jungle flycatcher | 1.09 g |
| Bird | Veniliornis passerinus | Little woodpecker | 1.5 g |
| Bird | Vermivora cyanoptera | Blue-winged warbler | 420 mg |
| Mammal | Vespadelus pumilus | Eastern forest bat | 122 mg |
| Mammal | Vespertilio murinus | Parti-coloured bat / Rearmouse | 445 mg |
| Insect | Vespula vulgaris | Common wasp / European wasp | 2.37 mg |
| Bird | Vidua paradisaea | Long-tailed paradise whydah / Eastern paradise whydah | 624 mg |
| Bird | Vini solitaria | Collared lory | 2.85 g |
| Bird | Vini stepheni | Stephen’s lorikeet / Henderson lorikeet / Henderson Island Lorikeet | 2.15 g |
| Reptile | Vipera aspis | Asp viper / European asp / Aspic viper | 102 mg |
| Reptile | Vipera berus | Common European adder / Common European viper / Common adder / Common viper | 105 mg |
| Bird | Vireo altiloquus | Black-whiskered vireo | 779 mg |
| Bird | Vireo griseus | White-eyed vireo | 601 mg |
| Bird | Vireo magister | Yucatan vireo | 746 mg |
| Bird | Vireo olivaceus | Red-eyed vireo | 617 mg |
| Bird | Vireo philadelphicus | Philadelphia vireo | 480 mg |
| Mammal | Viverra civettina | Malabar large-spotted civet / Malabar civet | 42.1 g |
| Mammal | Viverra megaspila | Large-spotted civet | 36.6 g |
| Mammal | Viverra tangalunga | Malayan civet / Malay civet / Oriental civet | 25.1 g |
| Mammal | Viverra zibetha | Large Indian civet | 37 g |
| Mammal | Viverricula indica | Small Indian civet | 16.8 g |
| Bird | Volatinia jacarina | Blue-black grassquit | 509 mg |
| Mammal | Vombatus ursinus | Common wombat / Bare-nosed wombat | 57.1 g |
| Mammal | Vormela peregusna | Marbled polecat | 5.37 g |
| Mammal | Vulpes bengalensis | Bengal fox / Indian fox | 24.8 g |
| Mammal | Vulpes chama | Cape fox / Asse / Cama fox / Silver-backed fox | 33.5 g |
| Mammal | Vulpes corsac | Corsac fox / Corsac / Steppe fox | 30 g |
| Mammal | Vulpes lagopus | Arctic fox / White fox / Polar fox / Snow fox | 40 g |
| Mammal | Vulpes pallida | Pale fox | 25 g |
| Mammal | Vulpes rueppellii | Rüppell’s fox / Rüppell’s sand fox | 25 g |
| Mammal | Vulpes velox | Swift fox | 32.1 g |
| Mammal | Vulpes vulpes | Red fox | 47.5 g |
| Mammal | Vulpes zerda | Fennec fox | 16.7 g |
| Bird | Vultur gryphus | Andean condor | 34 g |
| Mammal | Wallabia bicolor | Swamp wallaby / Black wallaby / Black-tailed wallaby / Fern wallaby | 33.2 g |
| Insect | Wasmannia auropunctata | Little fire ant / Electric ant | 0.007 mg |
| Bird | Willisornis poecilinotus | Common scale-backed antbird | 662 mg |
| Mammal | Wyulda squamicaudata | Scaly-tailed possum | 10.3 g |
| Bird | Xanthocephalus xanthocephalus | Yellow-headed blackbird | 1.71 g |
| Mammal | Xanthonycticebus pygmaeus | Pygmy slow loris | 7.52 g |
| Bird | Xanthotis flaviventer | Tawny-breasted honeyeater | 1.09 g |
| Bird | Xanthotis macleayanus | Macleay’s honeyeater | 940 mg |
| Bird | Xema sabini | Sabine’s gull / Fork-tailed gull / Sabine’s seagull | 2.29 g |
| Fish | Xenisthmus polyzonatus | Bull’s-eye wriggler / Polyzonate wriggler | 1.5 mg |
| Fish | Xenodermichthys copei | Bluntsnout smooth-head / Black slickhead / Cope’s bluntsnout smooth-head / Atlantic gymnast | 75.2 mg |
| Mammal | Xenogale naso | Long-nosed mongoose | 25.5 g |
| Fish | Xenomystus nigri | African brown knifefish | 140 mg |
| Reptile | Xenopeltis unicolor | Common sunbeam snake / Iridescent snake | 170 mg |
| Amphibian | Xenophrys major | Great Stream horned toad | 79 mg |
| Bird | Xenops minutus | Atlantic plain xenops / White-throated xenops | 509 mg |
| Amphibian | Xenopus laevis | African clawed frog / African clawed toad / African claw-toed frog / Platanna | 46.1 mg |
| Fish | Xenotilapia boulengeri | – | 124 mg |
| Fish | Xenotilapia flavipinnis | Yellow sand cichlid | 67 mg |
| Fish | Xenotilapia melanogenys | – | 118 mg |
| Fish | Xenotilapia ochrogenys | – | 69 mg |
| Fish | Xenotilapia ornatipinnis | – | 50.3 mg |
| Fish | Xenotilapia spiloptera | – | 60 mg |
| Bird | Xenus cinereus | Terek sandpiper | 1.07 g |
| Mammal | Xerospermophilus mohavensis | Mohave ground squirrel | 2.03 g |
| Mammal | Xerospermophilus perotensis | Perote ground squirrel | 2.79 g |
| Mammal | Xerospermophilus spilosoma | Spotted ground squirrel | 2.37 g |
| Mammal | Xerospermophilus tereticaudus | Round-tailed ground squirrel | 1.77 g |
| Mammal | Xerus rutilus | Unstriped ground squirrel | 5.09 g |
| Fish | Xiphias gladius | Swordfish / Broadbill | 1.93 g |
| Bird | Xiphorhynchus guttatus | Buff-throated woodcreeper | 1.55 g |
| Bird | Xolmis irupero | White monjita | 850 mg |
| Insect | Xylocopa californica | California carpenter bee / Western carpenter bee | 5.64 mg |
| Insect | Xylocopa cantabrita | – | 3.85 mg |
| Insect | Xylocopa valga | Splay-footed carpenter bee | 7.43 mg |
| Insect | Xylocopa violacea | Violet carpenter bee | 6.86 mg |
| Insect | Xylocopa virginica | Eastern carpenter bee | 5.37 mg |
| Mammal | Zaedyus pichiy | Pichi / Dwarf armadillo / Pygmy armadillo | 7.98 g |
| Mammal | Zaglossus bruijnii | Western long-beaked echidna / Bruijin’s long-beaked echidna | 37.3 g |
| Mammal | Zalophus californianus | California sea lion | 377 g |
| Reptile | Zamenis longissimus | Aesculapian snake | 168 mg |
| Fish | Zanclorhynchus spinifer | Antarctic horsefish / Spiny horsefish | 253 mg |
| Bird | Zanclostomus javanicus | Red-billed malkoha | 2.46 g |
| Fish | Zanclus cornutus | Moorish idol | 626 mg |
| Bird | Zanda baudinii | Baudin’s black cockatoo / Baudin’s cockatoo / Long-billed black cockatoo | 15.2 g |
| Bird | Zanda funerea | Yellow-tailed black cockatoo | 15.6 g |
| Bird | Zanda latirostris | Carnaby’s black cockatoo / Short-billed black cockatoo | 14.8 g |
| Bird | Zapornia atra | Henderson crake / Red-eyed crake / Henderson Island crake / Henderson Island rail | 1.32 g |
| Bird | Zapornia flavirostra | Black crake | 1.56 g |
| Bird | Zapornia pusilla | Baillon’s crake / Marsh crake | 777 mg |
| Mammal | Zapus hudsonius | Meadow jumping mouse | 560 mg |
| Mammal | Zapus princeps | Western jumping mouse | 510 mg |
| Mammal | Zapus trinotatus | Pacific jumping mouse | 500 mg |
| Fish | Zebrasoma flavescens | Yellow tang / Lemon sailfin / Yellow sailfin tang / Somber surgeonfish | 280 mg |
| Fish | Zebrasoma scopas | Brown tang / Twotone tang / Scopas tang / Brush-tail tang | 265 mg |
| Fish | Zebrasoma velifer | Sailfin tang / Pacific sailfin tang / Purple sailfinned tang / Sailfin surgeonfish | 597 mg |
| Fish | Zebrasoma xanthurum | Purple tang / Yellowtail tang | 174 mg |
| Bird | Zenaida asiatica | White-winged dove | 1.55 g |
| Bird | Zenaida auriculata | Eared dove | 1.23 g |
| Bird | Zenaida aurita | Zenaida dove | 1.37 g |
| Bird | Zenaida galapagoensis | Galápagos dove | 1.05 g |
| Bird | Zenaida macroura | Mourning dove / American mourning dove / Rain dove / Chueybird | 1.27 g |
| Bird | Zentrygon costaricensis | Buff-fronted quail-dove / Costa Rican quail-dove | 1.97 g |
| Bird | Zentrygon lawrencii | Purplish-backed quail-dove | 1.86 g |
| Fish | Zeus faber | John Dory / St Pierre fish / Peter’s fish | 494 mg |
| Amphibian | Zhangixalus chenfui | Chinese whipping frog / Chenfu’s treefrog | 33.5 mg |
| Amphibian | Zhangixalus dennysi | Chinese flying frog / Chinese gliding frog / Blanford’s whipping frog / Denny’s whipping frog | 106 mg |
| Amphibian | Zhangixalus dugritei | – | 42 mg |
| Amphibian | Zhangixalus feae | Fea’s large treefrog | 172 mg |
| Amphibian | Zhangixalus hongchibaensis | Wuxi tree frog | 47.3 mg |
| Amphibian | Zhangixalus hungfuensis | Sichuan whipping frog / Boaxing treefrog / Dugrite’s whipping tree frog | 32.1 mg |
| Amphibian | Zhangixalus omeimontis | Omei whipping frog / Omei treefrog | 65.4 mg |
| Mammal | Ziphius cavirostris | Cuvier’s beaked whale / Goose-beaked whale | 2 kg |
| Bird | Zonibyx modestus | Rufous-chested dotterel / Rufous-chested plover | 1.28 g |
| Reptile | Zonosaurus karsteni | Karsten’s girdled lizard | 214 mg |
| Reptile | Zonosaurus laticaudatus | Western girdled lizard | 323 mg |
| Reptile | Zonosaurus maximus | Southeastern girdled lizard | 565 mg |
| Reptile | Zonosaurus quadrilineatus | Four-lined girdled lizard | 209 mg |
| Bird | Zonotrichia albicollis | White-throated sparrow | 1.08 g |
| Bird | Zonotrichia capensis | Rufous-collared sparrow / Andean sparrow | 800 mg |
| Bird | Zonotrichia leucophrys | White-crowned sparrow | 1 g |
| Bird | Zoothera heinei | Russet-tailed thrush | 1.86 g |
| Bird | Zoothera lunulata | Bassian thrush / Olive-tailed thrush | 2.24 g |
| Reptile | Zootoca vivipara | Viviparous lizard / Common lizard | 28 mg |
| Bird | Zosterops japonicus | Warbling white-eye | 560 mg |
| Bird | Zosterops lateralis | Silvereye / Wax-eye / Tauhou | 488 mg |
| Bird | Zosterornis whiteheadi | Chestnut-faced babbler | 850 mg |
| Spider | Zygiella x-notata | Missing sector orb weaver / Silver-sided sector spider | 1.29 mg |
| Mammal | Zygogeomys trichopus | Michoacan pocket gopher | 3.95 g |
The table includes the average brain weight of almost 6,400 animal species. This list contains the main vertebrates which are mammals, birds, fish, amphibians, and reptiles (including dinosaurs) along with spiders and insects.
The weight unit can be milligrams, grams, or kilograms depending on how big the brain is. For example, the brain mass of blue whale is listed in kilograms while it’s shown in milligrams for rats and bees.
In addition to the brain weight, you will find the species’ scientific name and common names, if any. The common names were retrieved from Wikipedia. Also, the brain sizes are based on datasets of many academic journals, which are referenced at the end of article.
Examples of some popular animal species included are American crocodile, honey badger, brown bear, dromedary camel, African bush elephant, red fox, European toad, spotted hyena, black rhino, bald eagle, house mouse, plains zebra, sperm whale, common bottlenose dolphin and killer whale (orca), golden silk spider, Western honey bee, and bicolored carpenter ant.
It’s worth mentioning that we also included the brain weight of humans, in addition to one species for each of crabs, slugs, and earthworms.
For your convenience, the table data is sorted by alphabet of the scientific name.
To make searching easier, we have added a search box above the table which you can use to quickly filter the data. Also, you may scroll horizontally in case the brain weight data isn’t fully visible when browsing through a mobile device.
We also decided to separately include the brain weights for dog breeds (since they differ significantly) such as the beagle and bulldog. Here is the available data;
Brain Weight of Dog Breeds
| Dog Breed | Other Name(s) | Brain Weight (g) |
|---|---|---|
| Airedale terrier | Bingley terrier / Waterside terrier / King of terriers | 96.5 |
| Akita | Akita inu / Akita ken / Japanese akita / Great Japanese dog | 110 |
| Alaskan malamute | Malamute | 108 |
| American cocker spaniel | Cocker spaniel | 77.8 |
| American eskimo dog | American spitz / German spitz | 77.2 |
| American pit bull terrier | Pit bull terrier / Pitbull terrier | 97.1 |
| American staffordshire terrier | AmStaff | 96.9 |
| Australian cattle dog | Cattle dog / Blue heeler /Red heeler / Queensland heeler | 89.7 |
| Australian shepherd | Aussie | 90.7 |
| Basset hound | Basset | 95.4 |
| Beagle | English beagle | 79.7 |
| Belgian malinois | Belgian shepherd / Belgische herder / Belgian sheepdog | 97.7 |
| Bernese mountain dog | Berner sennenhund / Bernese cattle dog / Bouvier bernois | 110 |
| Bichon frise | Bichon a poil frise / Bichon tenerife | 66.9 |
| Border collie | – | 88.6 |
| Border terrier | Coquetdale terrier / Redesdale terrier | 70 |
| Boston terrier | Boston bull / Boston bull terrier / American gentleman | 73.2 |
| Boxer | German boxer / Deutscher boxer | 99 |
| Brittany spaniel | Breton spaniel / Brittany wiegref / French brittany | 87 |
| Bulldog | English bulldog / British bulldog | 94.8 |
| Cairn terrier | Short-haired skye terrier | 69.2 |
| Cardigan welsh corgi | Cardigan | 81.3 |
| Cavalier king charles spaniel | Cavalier king charles | 70 |
| Chihuahua | Chihuahueno | 55.1 |
| Coton de tulear | Coton | 64.3 |
| Dachshund | Dackel / Teckel | 68 |
| Dalmatian | Carriage dog / Spotted coach dog / Firehouse dog / Plum pudding dog | 96.6 |
| Dobermann | Doberman pinscher | 104 |
| English cocker spaniel | Merry cocker | 79.9 |
| English springer spaniel | Springer spaniel | 90.1 |
| Flat-coated retriever | Flatcoat / Flattie | 99.6 |
| French bulldog | Frenchie | 77.4 |
| German shepherd | Alsatian / Alsatian wolf dog / German shepherd dog | 105 |
| German shorthaired pointer | Deutsch kurzhaar / Kurzhaar / German shorthaired pointing dog | 97.1 |
| Golden retriever | Flat-coated retriever / Golden yellow retriever | 102 |
| Great dane | German mastiff / German boarhound / Deutsche dogge / Grand danois | 121 |
| Greyhound | English greyhound | 102 |
| Havanese | Havanese cuban bichon / Bichon havanese / Havanezer / Bichon habanero | 63.9 |
| Irish water spaniel | Whiptail / Shannon spaniel / Rat tail spaniel / Bog dog | 98.6 |
| Italian greyhound | Italian sighthound | 62.8 |
| Jack russell terrier | Jack russell | 68.9 |
| Labrador retriever | Labrador, Lab | 102 |
| Lhasa apso | Abso seng kye | 69.6 |
| Maltese dog | Maltese | 59.6 |
| Miniature pinscher | Zwergpinscher | 62.5 |
| Miniature poodle | Mini poodle | 67.5 |
| Miniature schnauzer | Zwergschnauzer | 69.8 |
| Newfoundland | Newfie | 120 |
| Papillon | Continental miniature spaniel | 57.7 |
| Parson russell terrier | Parson jack russell terrier / Parson | 68.9 |
| Pembroke welsh corgi | Corgi / Welsh corgi / Pembroke | 79.6 |
| Pomeranian | Pom / Dwarf spitz / German toy spitz | 59.1 |
| Portuguese water dog | Algarvian water dog / Portuguese fishing dog | 92.3 |
| Pug | Doguillo | 71.9 |
| Rat terrier | American rat terrier / Ratting terrier / Decker giant | 67.8 |
| Rhodesian ridgeback | African lionhound / African lion dog / Ridgeback | 107 |
| Rottweiler | Rottie | 110 |
| Rough collie | – | 98.9 |
| Samoyed | Bjelkier | 96.1 |
| Shetland sheepdog | Sheltie / Shetland collie / Dwarf scotch shepherd | 75.4 |
| Shiba inu | Japanese shiba inu / Japanese brushwood dog / Small brushwood dog / Shiba | 75.7 |
| Shih tzu | Chrysanthemum dog | 65.5 |
| Siberian husky | Chukcha / Sibe / Siberian dog | 94.6 |
| Soft coated wheaten terrier | Irish soft-coated wheaten terrier | 85.3 |
| St. bernard | Saint bernard / Bernhardiner | 122 |
| Staffordshire bull terrier | Staffy / Stafford | 88.3 |
| Standard poodle | – | 92.5 |
| Standard schnauzer | Mittelschnauzer / Rauhaarige pinscher | 84.1 |
| Tibetan terrier | Tsang apso / Dokhi apso | 75.9 |
| Vizsla | Hungarian vizsla / Magyar vizsla / Hungarian pointer | 93.6 |
| Weimaraner | Grey ghost | 101 |
| West highland white terrier | Poltalloch terrier / Roseneath terrier / White roseneath terrier / Westie | 70 |
| Whippet | Snap dog | 82 |
| Yorkshire terrier | Yorkie | 56.7 |
According to the table above; the largest brain among dog breeds belongs to newfoundland, great dane, and st. bernard while the breeds that have the smallest brain are chihuahua, yorkshire terrier, and papillon.
Conclusion
To conclude, we have listed the average brain mass of many animal species. The list includes mammals, birds, fish, reptiles, amphibians, and dinosaurs (i.e. vertebrates) along with insects and spiders (invertebrates). And the weight measurements are in grams, milligrams, and kilograms (depending on the size).
From the blue whale to Asian elephant to polar bear to white-tailed deer to domestic cat to etruscan shrew to giant house spider, you can find and compare the brain size of about 6,400 different species across several animal classes.
We also separately listed the brain mass of 74 dog breeds.
This is one of the shortest articles we have published so far since it merely lists the brain weights of animal species. But of course, compiling all these numbers took quite some time to do.
Hope the information was helpful for you.
Feel free to let us know if you want the brain data of any more species to be included in the list.
Lastly, be sure to check out our article about animals with largest & smallest brain size, you will probably learn something new and interesting on that topic.
